October 2022 - FFmpeg-trac - lists.ffmpeg.org

#6531(avformat:new): MPEG-TS encoder may stop emitting SDT/PAT/PMT after DTS jump or rollover
by FFmpeg 28 Dec '24

28 Dec '24

#6531: MPEG-TS encoder may stop emitting SDT/PAT/PMT after DTS jump or rollover ----------------------------------+-------------------------------------- Reporter: mavrik | Type: defect Status: new | Priority: normal Component: avformat | Version: git-master Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ----------------------------------+-------------------------------------- When transcoding broadcast MPEG-TS streams, there may be jumps or a rollover in PTS/DTS values in stream. That's perfectly valid, however ffmpeg's MPEG-TS muxer may stop emitting SDT/PAT/PMT tables. The issue was tracked down to `retransmit_si_info` method where two following comparisons are made: {{{ ... (dts != AV_NOPTS_VALUE && dts - ts->last_sdt_ts >= ts->sdt_period*90000.0) ... if (dts != AV_NOPTS_VALUE) ts->last_sdt_ts = FFMAX(dts, ts->last_sdt_ts); ... (dts != AV_NOPTS_VALUE && dts - ts->last_pat_ts >= ts->pat_period*90000.0) || ... if (dts != AV_NOPTS_VALUE) ts->last_pat_ts = FFMAX(dts, ts->last_pat_ts); }}} All those comparisons fail to take into account the possibility of DTS regressing which means a negative DTS jump will cause the muxer to stop emitting SDT tables alltogether in all streams and PAT/PMT tables alltogether in audio-only streams. -- Ticket URL: <https://trac.ffmpeg.org/ticket/6531> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#7449(undetermined:new): copyts fails if PCR near rollover
by FFmpeg 28 Dec '24

28 Dec '24

#7449: copyts fails if PCR near rollover --------------------------------------+---------------------------------- Reporter: jafa | Type: defect Status: new | Priority: normal Component: undetermined | Version: 3.4 Keywords: copyts pcr | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | --------------------------------------+---------------------------------- When the -copyts option is used and the PCR is near the rollover point (doesn't need to rollover, just be near it) ffmpeg appears to drop every video frame and fails to produce video output. ffmpeg version 3.4.4 (Ubuntu 18.04) Command: ffmpeg -i pcr_near_rollover.ts -copyts -c:v libx264 -c:a copy output.ts Input media: https://download.silicondust.com/tmp/pcr_near_rollover.ts The output file is small containing the audio but no video. Debug output shows a large number of "cur_dts is invalid" messages and "dropping frame 0" messages. Removing -copyts produces valid video. Supply an input file with a PCR further away from the rollover produces valid video. -- Ticket URL: <https://trac.ffmpeg.org/ticket/7449> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4175(swresample:new): Dolby Pro Logic II / Dolby matrix downmixing level balance
by FFmpeg 26 Dec '24

26 Dec '24

#4175: Dolby Pro Logic II / Dolby matrix downmixing level balance -------------------------------------+------------------------------------- Reporter: ranutso | Type: defect Status: new | Priority: normal Component: swresample | Version: 2.4.4 Keywords: downmix | Blocked By: surround stereo dplii | Reproduced by developer: 0 Blocking: | Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: Hello guys. I am trying to downmix a 5.1 audio to 2.0 (stereo) using the audio resampler filter "matrix_encoding=dplii". The resulting stereo audio presents some audio level bias towards the right speaker when there is more than one active channel on the surround stream. That is, it seems that the audio volume on the right speaker is higher than it should be. This is, of course, using a test signal where all surround channels produce the same sound at the same volume. How to reproduce: {{{ % ffmpeg -i ChID-BLITS-EBU-Narration441-16b.wav -ac 2 -filter:a "aresample=matrix_encoding=dplii" dplii.wav ffmpeg version 2.4.4 Copyright (c) 2000-2014 the FFmpeg developers built on Dec 4 2014 14:13:11 with Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn) }}} You may freely obtain the surround test file I used on the command above from Fraunhoffer's website. Direct link to the surround wave file: https://www2.iis.fraunhofer.de/AAC /ChID-BLITS-EBU-Narration441-16b.wav Fraunhoffer's page where that file's URL is located: https://www2.iis.fraunhofer.de/AAC/multichannel.html If you analyze both the surround input file and the resulting stereo wave file on Audacity, for example, you will notice that by 19 seconds into the audio stream all channels are active with a test signal. The same point in time on the resulting DPL-II downmixed shows a "higher volume" on the right speaker. This effect is even more noticeable by 22 seconds when they change the test signal. It is interesting to note that in the initial seconds of the file, when a male's voice is announcing each channel individually, I could not notice this right speaker bias. The channel downmixing in that segment sounds correct. This effect is very noticeable on sound tracks with very active surround channels, they all seem to be stronger on the right speaker. Thank you. -- Ticket URL: <https://trac.ffmpeg.org/ticket/4175> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4829(swscale:new): Overflows (?) in xyz -> rgb conversion
by FFmpeg 26 Dec '24

26 Dec '24

#4829: Overflows (?) in xyz -> rgb conversion --------------------------------------+--------------------------------- Reporter: cehoyos | Owner: Type: defect | Status: new Priority: normal | Component: swscale Version: git-master | Keywords: xyz Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 --------------------------------------+--------------------------------- http://thread.gmane.org/gmane.comp.video.ffmpeg.user/58666 The sample attached to ticket #4827 is in fact decoded fine (at least visually) by the native jpeg 2000 decoder but the colourspace conversion shows posterization artefacts. This is also reproducible with the libopenjpeg decoder. {{{ $ ffmpeg -i frm_000127.j2c out.png ffmpeg version N-74866-g0cdba4a Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.7 (SUSE Linux) configuration: --enable-gpl libavutil 54. 31.100 / 54. 31.100 libavcodec 56. 60.100 / 56. 60.100 libavformat 56. 40.101 / 56. 40.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 40.101 / 5. 40.101 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.101 / 1. 2.101 libpostproc 53. 3.100 / 53. 3.100 [jpeg2000 @ 0x33bd940] End mismatch 1 Last message repeated 4 times [jpeg2000 @ 0x33bd940] End mismatch 2 Last message repeated 1 times [jpeg2000 @ 0x33bd940] End mismatch 1 Last message repeated 28 times [jpeg2000 @ 0x33bd940] End mismatch 2 [jpeg2000 @ 0x33bd940] End mismatch 1 Last message repeated 19 times Input #0, j2k_pipe, from 'frm_000127.j2c': Duration: N/A, bitrate: N/A Stream #0:0: Video: jpeg2000 (JPEG 2000 digital cinema 2K), xyz12le, 2048x858, 25 tbr, 25 tbn, 25 tbc Output #0, image2, to 'out.png': Metadata: encoder : Lavf56.40.101 Stream #0:0: Video: png, rgb48be, 2048x858, q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc56.60.100 png Stream mapping: Stream #0:0 -> #0:0 (jpeg2000 (native) -> png (native)) Press [q] to stop, [?] for help [jpeg2000 @ 0x3655fa0] End mismatch 1 Last message repeated 4 times [jpeg2000 @ 0x3655fa0] End mismatch 2 Last message repeated 1 times [jpeg2000 @ 0x3655fa0] End mismatch 1 Last message repeated 28 times [jpeg2000 @ 0x3655fa0] End mismatch 2 [jpeg2000 @ 0x3655fa0] End mismatch 1 Last message repeated 19 times frame= 1 fps=0.8 q=-0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A video:5354kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown }}} {{{ $ ffmpeg -vcodec libopenjpeg -pix_fmt xyz12le -i frm_000127.j2c out.png ffmpeg version N-74866-g0cdba4a Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.7 (SUSE Linux) configuration: --enable-gpl --enable-libopenjpeg libavutil 54. 31.100 / 54. 31.100 libavcodec 56. 60.100 / 56. 60.100 libavformat 56. 40.101 / 56. 40.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 40.101 / 5. 40.101 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.101 / 1. 2.101 libpostproc 53. 3.100 / 53. 3.100 Input #0, j2k_pipe, from 'frm_000127.j2c': Duration: N/A, bitrate: N/A Stream #0:0: Video: jpeg2000, xyz12le, 2048x858, 25 tbr, 25 tbn, 25 tbc Output #0, image2, to 'out.png': Metadata: encoder : Lavf56.40.101 Stream #0:0: Video: png, rgb48be, 2048x858, q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc56.60.100 png Stream mapping: Stream #0:0 -> #0:0 (jpeg2000 (libopenjpeg) -> png (native)) Press [q] to stop, [?] for help frame= 1 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A video:5354kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown }}} I don't know if this ticket is related to ticket #3643. -- Ticket URL: <https://trac.ffmpeg.org/ticket/4829> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#9520(ffmpeg:new): Invalid pal8 -> gbrp conversion
by FFmpeg 26 Dec '24

26 Dec '24

#9520: Invalid pal8 -> gbrp conversion -------------------------------------+------------------------------------- Reporter: Robin | Type: defect Status: new | Priority: normal Component: ffmpeg | Version: 4.4.1 Keywords: pal8, gbrp, | Blocked By: pix_fmt | Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: ffmpeg is not correctly converting pal8 input to gbrp output. I discovered this when encoding optimized PNGs to UTVideo. Here is the first 30 first frames from Elephants Dream: https://www.mediafire.com/file/knisxsozg41001l/Elephants_Dream_First_30_Fra… The package contains both the original PNGs from Xiph and the optimized PNGs I created with oxipng. The original PNGs are all 24 bit. But the optimized ones are a mixed of 1bit, 8bit and 24bit. Copying and pasting my post from doom9 forums: https://forum.doom9.org/showthread.php?t=183452 I tested the release builds and master branch from gyan and Btbn. How to reproduce: {{{ 1. Encode the 30 frames to FFV1 and UTVideo: ffmpeg -i ED-30-xiph-source\%05d.png -c:v ffv1 ED-xiph_ffv1.mkv ffmpeg -i ED-30-xiph-source\%05d.png -c:v utvideo ED-xiph_utvideo.mkv ffmpeg -i ED-30-opt\%05d.png -pix_fmt bgr0 -c:v ffv1 ED-opt_ffv1.mkv ffmpeg -i ED-30-opt\%05d.png -c:v utvideo ED-opt_utvideo.mkv NOTE: The pix_fmt bgr0 command is necessary when encoding from the optimized files to prevent ffmpeg from encoding to greyscale since the first optimized PNG is 1-bit color. It is actually not necessary for UTvideo since it does support a grey or mono colorspace so will default to the appropriate pixel format. 2. Export all videos and PNGs to BMPs: ffmpeg -i ED-30-xiph-source\%05d.png BMP\ED-xiph-%02d.bmp ffmpeg -i ED-30-opt\%05d.png -pix_fmt bgr24 BMP\ED-opt-%02d.bmp ffmpeg -i ED-xiph_ffv1.mkv BMP\ED-xiph_ffv1-%02d.bmp ffmpeg -i ED-xiph_utvideo.mkv BMP\ED-xiph_utvideo-%02d.bmp ffmpeg -i ED-opt_ffv1.mkv BMP\ED-opt_ffv1-%02d.bmp ffmpeg -i ED-opt_utvideo.mkv BMP\ED_opt_utvideo-%02d.bmp 3. Perform checksum on all results. I find all BMPs have the same MD5 checksum except: ED_opt_utvideo-12.bmp 02a34fc1e347889d5546b547fa63e6af ED_opt_utvideo-13.bmp ca40ed9fc4acc827a4a77051433f0102 ED_opt_utvideo-14.bmp e3666199f35234756dddac97b8e18488 The above are sourced from the 8-bit optimized PNGs. The correct MD5 is as following: ED-xiph_utvideo-12.bmp ba5d92ca99726d837859b4b05795d317 ED-xiph_utvideo-13.bmp 735ee7c8b493855480fd0f5847a66132 ED-xiph_utvideo-14.bmp b509c3ac24e3543e1f59a7f1456e924d Which are sourced from the original Xiph PNGs that are all 24-bit. }}} Adding -pix_fmt to the source (before -i) did not fix the issue. Someone on doom9 found that specifying the conversion process to bgr0 (What FFV1 uses) then to UTVideo's gbrp solves the problem: ffmpeg -i "PATH\ED-30-opt\%05d.png" -vf format=bgr0,format=gbrp -c:v utvideo ED-opt_bgr0_gbrp_utvideo.mkv Which means the pal8 input (which ED_opt_utvideo-12 though 14 are) conversion directly to gbrp has an issue. It is possible other output conversions may have errors as well. -- Ticket URL: <https://trac.ffmpeg.org/ticket/9520> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

1 9

#9733(avcodec:new): Segfault while libaom-av1 2 pass encoding
by FFmpeg 24 Dec '24

24 Dec '24

#9733: Segfault while libaom-av1 2 pass encoding -------------------------------------+------------------------------------- Reporter: oloke | Type: defect Status: new | Priority: normal Component: avcodec | Version: git- Keywords: libaom-av1 | master libaom | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: Hello, I was trying to encode some videos into AV1 with libaom. Most of them encoded fine, but 4 out of 11 I tried, were constantly segfaulting. I also tried encoding the same videos with libvpx-vp9, and there was no issue. I reproduced the segfault using ffmpeg version n5.0 from Arch Linux repos and static build from johnvansickle. I recompiled ffmpeg as well as libaom in debug mode using [https://github.com/BtbN/FFmpeg-Builds/ FFmpeg-Builds] and ran ffmpeg with gdb. Now I'm not getting segfaults, just libaom assertion error. I picked one video out of few that were crashing. The first pass doesn't have any problems and exits with status code 0. The second one always crashes near the end of encoding. The video itself is 3840x2160 @30fps h264 yuvj420p, 1923 frames long, recorded using Oneplus phone. The libaom version I used is the latest git ([https://aomedia.googlesource.com/aom/+/refs/heads/main f78cf964666570438a022e6e67e597073a39ed62]). If that's libaom bug, sorry for reporting in the wrong place. I'm attaching the full report file as well as the shortened list of commands I ran. {{{ $ gdb --args /home/oloke/Sources/FFmpeg-Builds/artifacts/ffmpeg -i /HDD/Datasets/220416/VID_20220416_154320.mp4 -vf scale=-2:1080 -c:v libaom-av1 -b:v 3000k -minrate 100k -maxrate 4000k -crf 44 -row-mt 1 -tile-rows 2 -tile-columns 2 -cpu-used 4 -c:a libopus -b:a 64k -pass 1 -f null - $ gdb --args /home/oloke/Sources/FFmpeg-Builds/artifacts/ffmpeg -report -v 9 -loglevel 99 -i /HDD/Datasets/220416/VID_20220416_154320.mp4 -vf scale=-2:1080 -c:v libaom-av1 -b:v 3000k -minrate 100k -maxrate 4000k -crf 44 -row-mt 1 -tile-rows 2 -tile-columns 2 -cpu-used 4 -c:a libopus -b:a 64k -pass 2 VID_20220416_154320.av1.webm ... [extract_extradata @ 0x5555606ceac0] obu_type: 2, temporal_id: 0, spatial_id: 0, payload size: 0 [extract_extradata @ 0x5555606ceac0] obu_type: 3, temporal_id: 0, spatial_id: 0, payload size: 1 [webm @ 0x55555c0a5340] Writing block of size 124 with pts 63100, dts 63100, duration 20 at relative offset 848664 in cluster at offset 22991766. TrackNumber 2, keyframe 1 [webm @ 0x55555c0a5340] Writing block of size 120 with pts 63120, dts 63120, duration 20 at relative offset 848795 in cluster at offset 22991766. TrackNumber 2, keyframe 1 [webm @ 0x55555c0a5340] Writing block of size 5 with pts 63133, dts 63133, duration 33 at relative offset 848921 in cluster at offset 22991766. TrackNumber 1, keyframe 0 [extract_extradata @ 0x5555606ceac0] obu_type: 2, temporal_id: 0, spatial_id: 0, payload size: 0 [extract_extradata @ 0x5555606ceac0] obu_type: 6, temporal_id: 0, spatial_id: 0, payload size: 354 [webm @ 0x55555c0a5340] Writing block of size 114 with pts 63140, dts 63140, duration 20 at relative offset 848930 in cluster at offset 22991766. TrackNumber 2, keyframe 1 [webm @ 0x55555c0a5340] Writing block of size 123 with pts 63160, dts 63160, duration 20 at relative offset 849050 in cluster at offset 22991766. TrackNumber 2, keyframe 1 [webm @ 0x55555c0a5340] Writing block of size 359 with pts 63167, dts 63167, duration 33 at relative offset 849180 in cluster at offset 22991766. TrackNumber 1, keyframe 0 [extract_extradata @ 0x5555606ceac0] obu_type: 2, temporal_id: 0, spatial_id: 0, payload size: 0 [extract_extradata @ 0x5555606ceac0] obu_type: 3, temporal_id: 0, spatial_id: 0, payload size: 1 [webm @ 0x55555c0a5340] Writing block of size 109 with pts 63180, dts 63180, duration 20 at relative offset 849544 in cluster at offset 22991766. TrackNumber 2, keyframe 1 [webm @ 0x55555c0a5340] Writing block of size 5 with pts 63200, dts 63200, duration 33 at relative offset 849659 in cluster at offset 22991766. TrackNumber 1, keyframe 0 ffmpeg: /stage/aom/av1/encoder/temporal_filter.c:980: tf_setup_filtering_buffer: Assertion `to_filter_buf != NULL' failed. Thread 1 "ffmpeg" received signal SIGABRT, Aborted. 0x00007ffff7d1334c in __pthread_kill_implementation () from /usr/lib/libc.so.6 (gdb) bt #0 0x00007ffff7d1334c in __pthread_kill_implementation () from /usr/lib/libc.so.6 #1 0x00007ffff7cc64b8 in raise () from /usr/lib/libc.so.6 #2 0x00007ffff7cb0534 in abort () from /usr/lib/libc.so.6 #3 0x00007ffff7cb045c in __assert_fail_base.cold () from /usr/lib/libc.so.6 #4 0x00007ffff7cbf116 in __assert_fail () from /usr/lib/libc.so.6 #5 0x0000555557c608da in tf_setup_filtering_buffer (gf_frame_index=1065432237, filter_frame_lookahead_idx=25, cpi=0x5555611b3ba0) at /stage/aom/av1/encoder/temporal_filter.c:980 #6 init_tf_ctx (output_frame=0x44368c95dc1ded00, compute_frame_diff=1, gf_frame_index=1065432237, filter_frame_lookahead_idx=25, cpi=0x5555611b3ba0) at /stage/aom/av1/encoder/temporal_filter.c:1165 #7 av1_temporal_filter (cpi=cpi@entry=0x5555611b3ba0, filter_frame_lookahead_idx=filter_frame_lookahead_idx@entry=25, gf_frame_index=gf_frame_index@entry=0, frame_diff=0x55556113f760, output_frame=output_frame@entry=0x55556113f5b0) at /stage/aom/av1/encoder/temporal_filter.c:1243 #8 0x0000555557c60bfa in av1_tf_info_filtering (tf_info=0x55556113f4d8, cpi=cpi@entry=0x5555611b3ba0, gf_group=gf_group@entry=0x555561137528) at /stage/aom/av1/encoder/temporal_filter.c:1330 #9 0x0000555557c2f86c in av1_get_second_pass_params (cpi=cpi@entry=0x5555611b3ba0, frame_params=frame_params@entry=0x7fffffffd540, frame_flags=<optimized out>) at /stage/aom/av1/encoder/pass2_strategy.c:3820 #10 0x0000555557eb2f59 in av1_encode_strategy (cpi=cpi@entry=0x5555611b3ba0, --Type <RET> for more, q to quit, c to continue without paging-- size=size@entry=0x7fffffffd6d0, dest=0x7fff88b4c010 "\022", frame_flags=frame_flags@entry=0x7fffffffd6d8, time_stamp=time_stamp@entry=0x7fffffffd6e0, time_end=time_end@entry=0x7fffffffd6e8, timestamp_ratio=0x55556112c660, pop_lookahead=0x7fffffffd700, flush=1) at /stage/aom/av1/encoder/encode_strategy.c:1305 #11 0x0000555557bf9e12 in av1_get_compressed_data (cpi=cpi@entry=0x5555611b3ba0, cpi_data=cpi_data@entry=0x7fffffffd6c0) at /stage/aom/av1/encoder/encoder.c:4450 #12 0x0000555557bcb6b6 in encoder_encode (ctx=0x55556112bfd0, img=0x0, pts=<optimized out>, duration=1, enc_flags=<optimized out>) at /stage/aom/av1/av1_cx_iface.c:3036 #13 0x0000555557ba059c in aom_codec_encode (ctx=ctx@entry=0x55555c0a7850, img=0x0, pts=0, duration=1, flags=0) at /stage/aom/aom/src/aom_encoder.c:159 #14 0x0000555555e7274f in aom_encode (avctx=0x55555c0a7340, pkt=0x55555c0e3580, frame=0x0, got_packet=0x7fffffffd9c4) at libavcodec/libaomenc.c:1155 #15 0x0000555555d7a827 in encode_simple_internal (avctx=avctx@entry=0x55555c0a7340, avpkt=avpkt@entry=0x55555c0e3580) at libavcodec/encode.c:214 #16 0x0000555555d7ab00 in encode_simple_receive_packet (avctx=avctx@entry=0x55555c0a7340, avpkt=avpkt@entry=0x55555c0e3580) at libavcodec/encode.c:269 #17 0x0000555555d7ac47 in encode_receive_packet_internal (avctx=avctx@entry=0x55555c0a7340, avpkt=avpkt@entry=0x55555c0e3580) at libavcodec/encode.c:303 #18 0x0000555555d7adb2 in avcodec_receive_packet (avctx=avctx@entry=0x55555c0a7340, avpkt=avpkt@entry=0x55555c0e3580) at libavcodec/encode.c:404 #19 0x00005555558be5d9 in flush_encoders () at fftools/ffmpeg.c:1808 #20 0x00005555558be7e7 in transcode () at fftools/ffmpeg.c:4439 #21 0x00005555558bee0a in main (argc=35, argv=0x7fffffffdcf8) at fftools/ffmpeg.c:4625 (gdb) disass $pc-32,$pc+32 Dump of assembler code from 0x7ffff7d1332c to 0x7ffff7d1336c: 0x00007ffff7d1332c <__pthread_kill_implementation+252>: nopl 0x0(%rax) 0x00007ffff7d13330 <__pthread_kill_implementation+256>: mov $0xba,%eax 0x00007ffff7d13335 <__pthread_kill_implementation+261>: syscall 0x00007ffff7d13337 <__pthread_kill_implementation+263>: mov %eax,%ebp 0x00007ffff7d13339 <__pthread_kill_implementation+265>: call 0x7ffff7d62b60 <getpid> 0x00007ffff7d1333e <__pthread_kill_implementation+270>: mov %r12d,%edx 0x00007ffff7d13341 <__pthread_kill_implementation+273>: mov %ebp,%esi 0x00007ffff7d13343 <__pthread_kill_implementation+275>: mov %eax,%edi 0x00007ffff7d13345 <__pthread_kill_implementation+277>: mov $0xea,%eax 0x00007ffff7d1334a <__pthread_kill_implementation+282>: syscall => 0x00007ffff7d1334c <__pthread_kill_implementation+284>: mov %eax,%ebp 0x00007ffff7d1334e <__pthread_kill_implementation+286>: neg %ebp 0x00007ffff7d13350 <__pthread_kill_implementation+288>: cmp $0xfffff000,%eax 0x00007ffff7d13355 <__pthread_kill_implementation+293>: mov $0x0,%eax 0x00007ffff7d1335a <__pthread_kill_implementation+298>: cmova %ebp,%eax 0x00007ffff7d1335d <__pthread_kill_implementation+301>: jmp 0x7ffff7d132d2 <__pthread_kill_implementation+162> 0x00007ffff7d13362 <__pthread_kill_implementation+306>: nopw 0x0(%rax,%rax,1) 0x00007ffff7d13368 <__pthread_kill_implementation+312>: mov %r13,%rdi 0x00007ffff7d1336b <__pthread_kill_implementation+315>: call 0x7ffff7d0e370 <__lll_lock_wake_private> End of assembler dump. (gdb) info all-registers rax 0x0 0 rbx 0x7ffff7b838c0 140737349433536 rcx 0x7ffff7d1334c 140737351070540 rdx 0x6 6 rsi 0x26946 158022 rdi 0x26946 158022 rbp 0x26946 0x26946 rsp 0x7fffffffcd30 0x7fffffffcd30 r8 0x7fffffffce00 140737488342528 r9 0xa2e64656c6961 2865758500317537 r10 0x8 8 r11 0x246 582 r12 0x6 6 r13 0x3d4 980 r14 0x55555a616fae 93825076916142 r15 0x5555611b3ba0 93825189755808 rip 0x7ffff7d1334c 0x7ffff7d1334c <__pthread_kill_implementation+284> eflags 0x246 [ PF ZF IF ] cs 0x33 51 ss 0x2b 43 ds 0x0 0 es 0x0 0 fs 0x0 0 --Type <RET> for more, q to quit, c to continue without paging-- gs 0x0 0 st0 <invalid float value> (raw 0xffff0000000000000000) st1 <invalid float value> (raw 0xffff4a82788278825782) st2 -nan(0xffffffffffffffff) (raw 0xffffffffffffffffffff) st3 <invalid float value> (raw 0xffff4a82788278825782) st4 <invalid float value> (raw 0xffff453e3028453e3028) st5 <invalid float value> (raw 0xffff5855545358555453) st6 <invalid float value> (raw 0xffff453e4a4558555757) st7 <invalid float value> (raw 0xffff4543474e4a787857) fctrl 0x263 611 fstat 0x0 0 ftag 0xffff 65535 fiseg 0x0 0 fioff 0x0 0 foseg 0x0 0 fooff 0x0 0 fop 0x0 0 mxcsr 0x11ba [ DE OE UE PE IM DM PM ] ymm0 {v16_bfloat16 = {0x0 <repeats 16 times>}, v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x0, 0x0}} ymm1 {v16_bfloat16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,--Type <RET> for more, q to quit, c to continue without paging-- 0x0, 0x0, 0x0}, v8_float = {0x0, 0x0, 0x0, 0xffffffff, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x7fffffffffffffff, 0x0, 0x0}, v32_int8 = {0x0 <repeats 11 times>, 0xff, 0x0, 0x0, 0xff, 0xff, 0x0 <repeats 16 times>}, v16_int16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0xff00, 0x0, 0xffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0x0, 0x0, 0xff000000, 0xffff0000, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0xffff0000ff000000, 0x0, 0x0}, v2_int128 = {0xffff0000ff0000000000000000000000, 0x0}} ymm2 {v16_bfloat16 = {0x0, 0x0, 0x0, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_float = {0x0, 0xffffffff, 0xffffffff, 0xffffffff, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x7fffffffffffffff, 0x7fffffffffffffff, 0x0, 0x0}, v32_int8 = {0x3a, 0x39, 0x38, 0x30, 0x3a, 0x20, 0x74, 0x66, 0x5f, 0x73, 0x65, 0x74, 0x75, 0x70, 0x5f, 0x66, 0x0 <repeats 16 times>}, v16_int16 = {0x393a, 0x3038, 0x203a, 0x6674, 0x735f, 0x7465, 0x7075, 0x665f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0x3038393a, 0x6674203a, 0x7465735f, 0x665f7075, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x6674203a3038393a, 0x665f70757465735f, 0x0, 0x0}, v2_int128 = {0x665f70757465735f6674203a3038393a, 0x0}} ymm3 {v16_bfloat16 = {0xa, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_float = {0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x7fffffffffffffff, 0x7fffffffffffffff, 0x0, 0x0}, v32_int8 = {0x20, 0x41, 0x73, 0x73, 0x65, 0x72, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x60, 0x74, 0x6f, 0x5f, 0x66, 0x0 <repeats 16 times>}, v16_int16 = {0x4120, 0x7373, 0x7265, 0x6974, 0x6e6f, 0x6020, 0x6f74, 0x665f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0x73734120, 0x69747265, 0x60206e6f, 0x665f6f74, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x6974726573734120, 0x665f6f7460206e6f, 0x0, 0x0}, v2_int128 = {0x665f6f7460206e6f6974726573734120, 0x0}} ymm4 {v16_bfloat16 = {0x0, 0xffff, 0xffff, 0xffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, --Type <RET> for more, q to quit, c to continue without paging-- 0x0, 0x0, 0x0, 0x0, 0x0}, v8_float = {0xffffffff, 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x7fffffffffffffff, 0x0, 0x0, 0x0}, v32_int8 = {0x4c, 0x27, 0x20, 0x66, 0x61, 0x69, 0x6c, 0x65, 0x64, 0x2e, 0xa, 0x0, 0x55, 0x55, 0x0 <repeats 18 times>}, v16_int16 = {0x274c, 0x6620, 0x6961, 0x656c, 0x2e64, 0xa, 0x5555, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0x6620274c, 0x656c6961, 0xa2e64, 0x5555, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x656c69616620274c, 0x5555000a2e64, 0x0, 0x0}, v2_int128 = {0x5555000a2e64656c69616620274c, 0x0}} ymm5 {v16_bfloat16 = {0x0, 0x0, 0x0, 0x3, 0x0 <repeats 12 times>}, v8_float = {0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x87, 0x0, 0x0, 0x0}, v32_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0xe0, 0x60, 0x40, 0x0 <repeats 24 times>}, v16_int16 = {0x0, 0x0, 0xe000, 0x4060, 0x0 <repeats 12 times>}, v8_int32 = {0x0, 0x4060e000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x4060e00000000000, 0x0, 0x0, 0x0}, v2_int128 = {0x4060e00000000000, 0x0}} ymm6 {v16_bfloat16 = {0x0, 0x0, 0x0, 0x1, 0x0 <repeats 12 times>}, v8_float = {0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xe0, 0x3f, 0x0 <repeats 24 times>}, v16_int16 = {0x0, 0x0, 0x0, 0x3fe0, 0x0 <repeats 12 times>}, v8_int32 = {0x0, 0x3fe00000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x3fe0000000000000, 0x0, 0x0, 0x0}, v2_int128 = {0x3fe0000000000000, 0x0}} ymm7 {v16_bfloat16 = {0x0 <repeats 16 times>}, v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x0, 0x0}} ymm8 {v16_bfloat16 = {0xffff, 0xffff, 0x0, 0xffff, 0xffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_float = {0xffffffff, 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x7fffffffffffffff, 0x0, 0x0, 0x0}, v32_int8 = {0x0, 0x68, 0x65, 0x6c, 0x70, 0x0, 0--Type <RET> for more, q to quit, c to continue without paging-- x55, 0x73, 0x61, 0x67, 0x65, 0x3a, 0x0, 0x25, 0x73, 0x20, 0x0 <repeats 16 times>}, v16_int16 = {0x6800, 0x6c65, 0x70, 0x7355, 0x6761, 0x3a65, 0x2500, 0x2073, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0x6c656800, 0x73550070, 0x3a656761, 0x20732500, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x735500706c656800, 0x207325003a656761, 0x0, 0x0}, v2_int128 = {0x207325003a656761735500706c656800, 0x0}} ymm9 {v16_bfloat16 = {0x0 <repeats 16 times>}, v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0 <repeats 32 times>}, v16_int16 = {0x0 <repeats 16 times>}, v8_int32 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x0, 0x0, 0x0, 0x0}, v2_int128 = {0x0, 0x0}} ymm10 {v16_bfloat16 = {0x0, 0x0, 0x0, 0xffff, 0x0 <repeats 12 times>}, v8_float = {0x56000000, 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x60, 0x55, 0x55, 0x55, 0x55, 0x55, 0xe5, 0xbf, 0x0 <repeats 24 times>}, v16_int16 = {0x5560, 0x5555, 0x5555, 0xbfe5, 0x0 <repeats 12 times>}, v8_int32 = {0x55555560, 0xbfe55555, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0xbfe5555555555560, 0x0, 0x0, 0x0}, v2_int128 = {0xbfe5555555555560, 0x0}} ymm11 {v16_bfloat16 = {0x0, 0x0, 0x0, 0x1, 0x0 <repeats 12 times>}, v8_float = {0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x4e, 0x55, 0x59, 0x99, 0x99, 0x99, 0xe9, 0x3f, 0x0 <repeats 24 times>}, v16_int16 = {0x554e, 0x9959, 0x9999, 0x3fe9, 0x0 <repeats 12 times>}, v8_int32 = {0x9959554e, 0x3fe99999, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x3fe999999959554e, 0x0, 0x0, 0x0}, v2_int128 = {0x3fe999999959554e, 0x0}} ymm12 {v16_bfloat16 = {0x1d20, 0x0, 0xb000, 0xffff, 0x0 <repeats 12 times>}, v8_float = {0x0, 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0xffffffffffffffff, 0x0, 0x0, 0x0}, v32_int8 = {0xe9, 0x45, 0x48, 0x9b, 0x5b, 0x49, 0xf2, 0xbf, 0x0 <repeats 24 times>}, v16_int1-- Type <RET> for more, q to quit, c to continue without paging-- 6 = {0x45e9, 0x9b48, 0x495b, 0xbff2, 0x0 <repeats 12 times>}, v8_int32 = {0x9b4845e9, 0xbff2495b, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0xbff2495b9b4845e9, 0x0, 0x0, 0x0}, v2_int128 = {0xbff2495b9b4845e9, 0x0}} ymm13 {v16_bfloat16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x0, 0x4, 0x8, 0x0, 0x0, 0x4, 0x8, 0x0, 0x0, 0x4, 0x8, 0x0, 0x0, 0x4, 0x8, 0x0 <repeats 17 times>}, v16_int16 = {0x400, 0x8, 0x400, 0x8, 0x400, 0x8, 0x400, 0x8, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0x80400, 0x80400, 0x80400, 0x80400, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x8040000080400, 0x8040000080400, 0x0, 0x0}, v2_int128 = {0x80400000804000008040000080400, 0x0}} ymm14 {v16_bfloat16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_float = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x0, 0x0, 0x0, 0x0}, v32_int8 = {0x30, 0x10, 0x30, 0x10, 0x30, 0x10, 0x30, 0x10, 0x30, 0x10, 0x30, 0x10, 0x30, 0x10, 0x2f, 0x10, 0x0 <repeats 16 times>}, v16_int16 = {0x1030, 0x1030, 0x1030, 0x1030, 0x1030, 0x1030, 0x1030, 0x102f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0x10301030, 0x10301030, 0x10301030, 0x102f1030, 0x0, 0x0, 0x0, 0x0}, v4_int64 = {0x1030103010301030, 0x102f103010301030, 0x0, 0x0}, v2_int128 = {0x102f1030103010301030103010301030, 0x0}} ymm15 {v16_bfloat16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_float = {0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x0, 0x0, 0x0, 0x0}, v4_double = {0x7fffffffffffffff, 0x7fffffffffffffff, 0x0, 0x0}, v32_int8 = {0x80, 0xfe, 0xff, 0xff, 0x80, 0xfe, 0xff, 0xff, 0x80, 0xfe, 0xff, 0xff, 0x80, 0xfe, 0xff, 0xff, 0x0 <repeats 16 times>}, v16_int16 = {0xfe80, 0xffff, 0xfe80, 0xffff, 0xfe80, 0xffff, 0xfe80, 0xffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int32 = {0xfffffe80, 0xfffffe80, 0xfffffe80, 0xfffffe80, 0x0, 0x--Type <RET> for more, q to quit, c to continue without paging-- 0, 0x0, 0x0}, v4_int64 = {0xfffffe80fffffe80, 0xfffffe80fffffe80, 0x0, 0x0}, v2_int128 = {0xfffffe80fffffe80fffffe80fffffe80, 0x0}} (gdb) }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/9733> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#9192(ffmpeg:new): Command line switch sws_dither doesn't allow "none"
by FFmpeg 23 Dec '24

23 Dec '24

#9192: Command line switch sws_dither doesn't allow "none" -------------------------------------+------------------------------------- Reporter: | Type: defect Videogamer555 | Status: new | Priority: important Component: ffmpeg | Version: | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: When using the -sws_dither command line switch to disable dithering with the value "none", it still behaves as if it was using the default value of "ed" (which is error diffusion dithering). How to reproduce: {{{ % ffmpeg -i video_in.avi -swf_dither none animation.gif ffmpeg version is latest nightly Windows build "N-101948-g870bfe16a1 -ffmpeg-windows-build-helpers" built on April 14, 2021 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/9192> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#9771(avcodec:new): Small MAX_SLICES makes d3d11va (AVC) not bitperfect and causes artifacts (but not CUDA/NVDEC)
by FFmpeg 23 Dec '24

23 Dec '24

#9771: Small MAX_SLICES makes d3d11va (AVC) not bitperfect and causes artifacts (but not CUDA/NVDEC) -------------------------------------+------------------------------------- Reporter: Balling | Type: defect Status: new | Priority: important Component: avcodec | Version: git- Keywords: d3d11va, | master h264, hwaccel, dxva2 | Blocked By: Blocking: | Reproduced by developer: 1 Analyzed by developer: 1 | -------------------------------------+------------------------------------- Some time ago I saw this commit in Nev's fork of ffmpeg: https://git.1f0.de/gitweb/?p=ffmpeg.git;a=commit;h=550cf548b546d386a6c63435… ('''patch fixes this bug''') Then I saw this: https://github.com/wang-bin/QtAV/issues/923 (that file does not warn that "MAX_SLICES should be increased", may be another bug) And then I saw #628 and tested it. '''This is what I found:''' -hwaccel cuda and -c:v h264_cuvid input option to NV12 are bitperfect with each other and bitperfect with Nev's fork d3d11va, but not bitperfect with HEAD of our master branch d3d11va and on a sample from https://github.com /wang-bin/QtAV/files/1132086/example.zip causes the artifacts mentioned there and on sample from #628 even worse artifacts are present. I will also point out that there is no difference with SW decoding of sample in #628 between the master and the fork which means the increase in SAMPLES in avc bitsream does not matter on that sample. Of course someone should still check the reference decoder from https://vcgit.hhi.fraunhofer.de/jvet How to reproduce: {{{ ffmpeg.exe -hwaccel nvdec -i error_4942.264 -f md5 - ffmpeg version N-106825-g30a49a5230-20220507 Copyright (c) 2000-2022 the FFmpeg developers built with gcc 11.2.0 (crosstool-NG 1.24.0.533_681aaef) configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --enable-shared --disable-static --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable- libaribb24 --enable-avisynth --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --enable- libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable- librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable- libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra- ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra- version=20220507 libavutil 57. 24.101 / 57. 24.101 libavcodec 59. 27.100 / 59. 27.100 libavformat 59. 23.100 / 59. 23.100 libavdevice 59. 6.100 / 59. 6.100 libavfilter 8. 38.100 / 8. 38.100 libswscale 6. 6.100 / 6. 6.100 libswresample 4. 6.100 / 4. 6.100 libpostproc 56. 5.100 / 56. 5.100 Input #0, h264, from 'error_4942.264': Duration: N/A, bitrate: N/A Stream #0:0: Video: h264 (High), yuv420p(progressive), 352x288, 30 fps, 30 tbr, 1200k tbn Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> rawvideo (native)) Press [q] to stop, [?] for help Output #0, md5, to 'pipe:': Metadata: encoder : Lavf59.23.100 Stream #0:0: Video: rawvideo (NV12 / 0x3231564E), nv12(progressive), 352x288, q=2-31, 36495 kb/s, 30 fps, 30 tbn Metadata: encoder : Lavc59.27.100 rawvideo [h264 @ 000001115560d9c0] Possibly too many slices (110 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (111 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (112 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (116 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (117 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (118 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (119 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (120 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (121 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (122 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (123 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (124 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (99 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (100 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (32 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (33 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (34 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (35 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (36 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (37 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (38 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (39 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (40 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (41 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (42 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (43 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (44 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (45 >= 32), increase MAX_SLICES and recompile if there are artifacts [h264 @ 000001115560d9c0] Possibly too many slices (46 >= 32), increase MAX_SLICES and recompile if there are artifacts ... MD5=ab07a0a0a82a2e9a6486a8b6994eb505 frame= 299 fps=0.0 q=-0.0 Lsize= 0kB time=00:00:09.96 bitrate= 0.0kbits/s speed=32.7x video:44402kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown }}} {{{ ffmpeg.exe -c:v h264_cuvid -i error_4942.264 -f md5 - ffmpeg version N-106825-g30a49a5230-20220507 Copyright (c) 2000-2022 the FFmpeg developers built with gcc 11.2.0 (crosstool-NG 1.24.0.533_681aaef) configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --enable-shared --disable-static --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable- libaribb24 --enable-avisynth --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --enable- libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable- librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable- libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra- ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra- version=20220507 libavutil 57. 24.101 / 57. 24.101 libavcodec 59. 27.100 / 59. 27.100 libavformat 59. 23.100 / 59. 23.100 libavdevice 59. 6.100 / 59. 6.100 libavfilter 8. 38.100 / 8. 38.100 libswscale 6. 6.100 / 6. 6.100 libswresample 4. 6.100 / 4. 6.100 libpostproc 56. 5.100 / 56. 5.100 Input #0, h264, from 'error_4942.264': Duration: N/A, bitrate: N/A Stream #0:0: Video: h264 (High), yuv420p(progressive), 352x288, 30 fps, 30 tbr, 1200k tbn Stream mapping: Stream #0:0 -> #0:0 (h264 (h264_cuvid) -> rawvideo (native)) Press [q] to stop, [?] for help Output #0, md5, to 'pipe:': Metadata: encoder : Lavf59.23.100 Stream #0:0: Video: rawvideo (NV12 / 0x3231564E), nv12(tv, progressive), 352x288 [SAR 1:1 DAR 11:9], q=2-31, 36495 kb/s, 30 fps, 30 tbn Metadata: encoder : Lavc59.27.100 rawvideo MD5=ab07a0a0a82a2e9a6486a8b6994eb505 0kB time=00:00:00.00 bitrate=N/A speed= 0x frame= 299 fps=0.0 q=-0.0 Lsize= 0kB time=00:00:09.96 bitrate= 0.0kbits/s speed=43.7x video:44402kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown }}} {{{ ffmpeg.exe -hwaccel d3d11va -i error_4942.264 -f md5 - ... MD5=2503d2e721d32182a09538f73d534255 }}} And finaly Nev's fork: {{{ Lav\ffmpeg.exe -hwaccel d3d11va -i error_4942.264 -f md5 - ffmpeg version git-2022-01-04-176dfd865e-20220331 Copyright (c) 2000-2022 the FFmpeg developers built with gcc 11.2.0 (crosstool-NG 1.24.0.533_681aaef) configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --enable-shared --disable-static --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable- avisynth --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librist --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --enable-libopencore-amrnb --enable- libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable- libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable- libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable- libxvid --enable-libzimg --enable-libzvbi --extra- cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20220331 libavutil 57. 16.100 / 57. 16.100 libavcodec 59. 17.100 / 59. 17.100 libavformat 59. 15.100 / 59. 15.100 libavdevice 59. 3.100 / 59. 3.100 libavfilter 8. 23.100 / 8. 23.100 libswscale 6. 3.100 / 6. 3.100 libswresample 4. 2.100 / 4. 2.100 libpostproc 56. 2.100 / 56. 2.100 Input #0, h264, from 'error_4942.264': Duration: N/A, bitrate: N/A Stream #0:0: Video: h264 (High), yuv420p(progressive), 352x288, 30 fps, 30 tbr, 1200k tbn Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> rawvideo (native)) Press [q] to stop, [?] for help Output #0, md5, to 'pipe:': Metadata: encoder : Lavf59.15.100 Stream #0:0: Video: rawvideo (NV12 / 0x3231564E), nv12(progressive), 352x288, q=2-31, 36495 kb/s, 30 fps, 30 tbn Metadata: encoder : Lavc59.17.100 rawvideo MD5=ab07a0a0a82a2e9a6486a8b6994eb505 0kB time=00:00:00.00 bitrate=N/A speed= 0x frame= 299 fps=0.0 q=-0.0 Lsize= 0kB time=00:00:09.96 bitrate= 0.0kbits/s speed=20.8x video:44402kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown }}} Same for the other sample. Same happens in VLC when you remux either sample to mp4 (also see mpv.com -hwdec=d3d11va error_4942.264 or mpv.com -hwdec=dxva2 error_4942.264 but not mpv.com -hwdec=nvdec -gpu-api=vulkan error_4942.264). Does not happen in Davinci since that uses directly nvdec which is not affected (I know since it also supports HW accel of HEVC 4:4:4 10 bit). '''dxva2 is also affected thoogh on Nev's fork it is broken.''' '''Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.''' does not apply, patch is simple, but the bug may be somehow fixed differently, I am sure, since SW decoder MAX_SLICES do not effect anything. -- Ticket URL: <https://trac.ffmpeg.org/ticket/9771> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#9413(ffmpeg:new): Feature request: WindowsGraphicsCapture API
by FFmpeg 22 Dec '24

22 Dec '24

#9413: Feature request: WindowsGraphicsCapture API -------------------------------------+------------------------------------- Reporter: MB SOFT | Type: | enhancement Status: new | Priority: normal Component: ffmpeg | Version: Keywords: | unspecified WindowsGraphicsCapture API | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Feature request: could you please add WindowsGraphicsCapture API as a method to capture a window? this would allow to capture any graphics in the window -- Ticket URL: <https://trac.ffmpeg.org/ticket/9413> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#8054(ffmpeg:new): prores_ks codec does not allow 12bit pix_fmt
by FFmpeg 21 Dec '24

21 Dec '24

#8054: prores_ks codec does not allow 12bit pix_fmt --------------------------------------+---------------------------------- Reporter: shaocaholica | Type: defect Status: new | Priority: normal Component: ffmpeg | Version: 4.1 Keywords: prores_ks | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | --------------------------------------+---------------------------------- Summary of the bug: Apple prores4444XQ which is supported by prores_ks allows for 12bit RGB/YUV channels but when a 12bit pix_fmt is used a warning is given: {{{ Incompatible pixel format 'yuv444p12le' for codec 'prores_ks', auto- selecting format 'yuv444p10le' }}} How to reproduce: {{{ % ffmpeg -f image2 -r 24.0 -i sample_16bit.%4d.tif -c:v prores_ks -profile:v 5 -pix_fmt yuv444p12le -vf colormatrix=bt601:bt709 prores4444XQ.mov ffmpeg version 4.1-static https://johnvansickle.com/ffmpeg/ built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/8054> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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