July 2025 - FFmpeg-trac - lists.ffmpeg.org

#11597(avfilter:new): FFmpeg output is stuck if using split with fps filter
by FFmpeg 06 Jul '25

06 Jul '25

#11597: FFmpeg output is stuck if using split with fps filter -------------------------------------+------------------------------------- Reporter: TheTroll | Type: defect Status: new | Priority: important Component: avfilter | Version: git- Keywords: split | master thumbnail | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: How to reproduce: {{{ % ffmpeg -re -y -i INPUT -filter_complex "[0:v]split=2[s0][sthumb];[s0]scale=320:184[o0];[sthumb]fps=1/60[othumb]" -an -c:v libx264 -map [o0] out.ts -map [othumb] -update 1 out.png }}} Built on master When trying to transcode an input live stream while extracting thumbnails (every minute in this example), using the split and fps filters, FFmpeg gets blocked and eventually generates the output after a while, by bursts. The following warning indicates that something is wrong: [out_#0:0 @ 0x7f1018013c00] 100 buffers queued in out_#0:0, something may be wrong. FFmpeg 5.1.2 works fine and as expected. Thanks -- Ticket URL: <https://trac.ffmpeg.org/ticket/11597> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11366(undetermined:new): Regression when prepending/concatenating still image to video
by FFmpeg 06 Jul '25

06 Jul '25

#11366: Regression when prepending/concatenating still image to video -------------------------------------+------------------------------------- Reporter: mahozad | Type: defect Status: new | Priority: normal Component: | Version: 7.1 undetermined | Keywords: concat | Blocked By: concatenate filter_complex | Blocking: | Reproduced by developer: 1 Analyzed by developer: 0 | -------------------------------------+------------------------------------- **Summary of the bug:** I'm using FFmpeg to create clips with ability to concat an image to be shown at the start of the clip for the specified duration: https://github.com/mahozad/cutcon It uses FFmpeg CLI. FFmpeg version 6.1.1 (and I think also version 5.1.2) worked as expected. When upgrading to FFmpeg 7.1, the result video just contains the intro image and then just ends. I'm not sure if this is a regression. Maybe my FFmpeg command is "wrong" and it should have failed in previous versions as well? **How to reproduce:** FFmpeg 7.1 and also FFmpeg-full 2024-12-19-git-494c961379 downloaded from https://www.gyan.dev/ffmpeg/builds/ both tested on Windows 11. Here is an example FFmpeg invocation (formatted, each option in a new line) to reproduce the problem. It tries to create a clip from an input MP4 file and show an image at the start for 8 seconds. The image size is coerced to be at maximum the size of video and is padded with black color if its aspect ratio is different than the video. There is some other filters too. {{{ path/to/ffmpeg.exe -y -nostdin -loglevel info -stats_period 0.1s -accurate_seek -ss 356500ms -to 378500ms -i path/to/a/video.mp4 -loop 1 -framerate 25 -t 8s -i path/to/a/picture.jpg -t 8s -f lavfi -i aevalsrc=0 -filter_complex [0] yadif=1 [media-de-interlaced]; [media-de-interlaced] scale=iw*sar:ih [media-anamorphic-fixed]; [media-anamorphic-fixed] pad=ceil(iw/2)*2:ceil(ih/2)*2 [media-odd- pixel-number-fixed]; [media-odd-pixel-number-fixed] setsar=1/1 [media-source-aspect- ratio-normalized]; [media-source-aspect-ratio-normalized] null [media]; [1][media] scale2ref='if(gt(main_a,a),min(main_w,iw),min(main_h,ih)*main_a)':'if(gt(main_a,a),min(main_w,iw)/main_a,min(main_h,ih))' [intro-image-max-size-coerced][media]; [1][media] scale2ref=iw:ih [size-template][media]; [size-template] drawbox=w=iw:h=ih:t=fill:color=#000000 [intro- background]; [intro-background][intro-image-max-size-coerced] overlay=x='(W-w)/2':y='(H-h)/2' [intro-with-background]; [intro-with-background] setsar=1/1 [intro-source-aspect-ratio- normalized]; [intro-source-aspect-ratio-normalized] null [intro]; [intro][2][media] concat=n=2:v=1:a=1 -c:v libx264 -c:a aac -crf 23 -r 25 -metadata encoding_tool=Cutcon v1.2.3 path/to/output.mp4 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/11366> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#10959(undetermined:new): ffmpeg 7.0: Assertion best_input >= 0 failed at fftools/ffmpeg_filter.c:1923
by FFmpeg 06 Jul '25

06 Jul '25

#10959: ffmpeg 7.0: Assertion best_input >= 0 failed at fftools/ffmpeg_filter.c:1923 -------------------------------------+------------------------------------- Reporter: Andreas | Type: defect Status: new | Priority: normal Component: | Version: undetermined | unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- I try to split a video into 3 parts: {{{ % C:/Java/ffmpeg-n7.0-latest-win64-gpl-7.0/bin/ffmpeg.exe -report -nostdin -y -i video.mp4 -filter_complex "[v:0]select=n='3':e='gte(t,0.00)*lt(t,10.45)*1 + gte(t,10.45)*lt(t,58.50)*2 + gte(t,58.50)*lt(t,3661.00)*3'[vout001][vout002][vout003]" -map [vout001] v00-001.mp4 -map [vout002] v00-002.mp4 -map [vout003] v00-003.mp4 ... [out_0_0 @ 0000021b889bd600] 100 buffers queued in out_0_0, something may be wrong. ... [out_1_0 @ 0000021b889be200] 100 buffers queued in out_1_0, something may be wrong. [out_1_0 @ 0000021b889be200] 1000 buffers queued in out_1_0, something may be wrong. ... Assertion best_input >= 0 failed at fftools/ffmpeg_filter.c:1923 }}} It is independent of the input video, but you can find the video here: https://a-voss.de/ffmpeg/video.mp4 -- Ticket URL: <https://trac.ffmpeg.org/ticket/10959> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11652(ffmpeg:new): [security] libavcodec/hevc/hevcdec.c:2147:16 SEGV in hls_prediction_unit
by FFmpeg 06 Jul '25

06 Jul '25

#11652: [security] libavcodec/hevc/hevcdec.c:2147:16 SEGV in hls_prediction_unit -------------------------------------+------------------------------------- Reporter: sigdevel | Type: defect Status: new | Priority: normal Component: ffmpeg | Version: git- Keywords: libavcodec, | master SIGSEGV, hevc | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: When processing specially crafted HEVC-video streams, the HEVC decoder fails to validate the decoding context pointer (s->HEVClc) before accessing its substructures. This leads to a NULL pointer dereference when accessing s->HEVClc->pu.merge_flag, causing a segmentation fault and denial-of-service How to reproduce: {{{ ./ffmpeg -i ./3_poc_libavcodec_hevc_hevcdec_c_2147 -f null }}} ENV: {{{ ffmpeg debug version: N-120056-g6e8bd5dd25 (ffmpeg commit hash 6e8bd5dd2588f892cde308022a8a1e6ee82b9fa0) ; ffmpeg latest autobuild version: ffmpeg version N-120054-g18c62245d7-20250627 ; built on: 6.12.25-amd64 ; build opts debug: --disable-shared --enable-static --disable-doc --enable- gpl --enable-libass --enable-libfreetype --enable-libmp3lame --enable- libopus --enable-libvorbis --enable-libx264 --enable-libx265 --enable- nonfree --toolchain=clang-asan --enable-debug=3 --disable-optimizations --disable-stripping ; build opts default: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-ffbuild-linux-gnu- --arch=x86_64 --target-os=linux --enable-gpl --enable-version3 --disable- debug --enable-iconv --enable-zlib --enable-libfribidi --enable-gmp --enable-libxml2 --enable-openssl --enable-lzma --enable-fontconfig --enable-libharfbuzz --enable-libfreetype --enable-libvorbis --enable- opencl --enable-libpulse --enable-libvmaf --enable-libxcb --enable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --enable- libdvdread --enable-libdvdnav --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libaribcaption --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-libzmq --enable-lv2 --enable-libvpl --enable-openal --enable-liboapv --enable- libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable- librubberband --disable-schannel --enable-sdl2 --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --enable-libdrm --enable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libvvenc --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-libs='-ldl -lgomp' --extra-ldflags=-pthread --extra-ldexeflags=-pie --cc=x86_64-ffbuild-linux-gnu-gcc --cxx=x86_64 -ffbuild-linux-gnu-g++ --ar=x86_64-ffbuild-linux-gnu-gcc-ar --ranlib=x86_64-ffbuild-linux-gnu-gcc-ranlib --nm=x86_64-ffbuild-linux- gnu-gcc-nm --extra-version=20250627 }}} Asan output: {{{ ffmpeg version N-120001-gf789d60e11 Copyright (c) 2000-2025 the FFmpeg developers built with Debian clang version 19.1.7 (1+b1) configuration: --disable-shared --enable-static --disable-doc --enable- gpl --enable-libass --enable-libfreetype --enable-libmp3lame --enable- libopus --enable-libvorbis --enable-libx264 --enable-libx265 --enable- nonfree --toolchain=clang-asan --enable-debug=3 --disable-optimizations --disable-stripping libavutil 60. 3.100 / 60. 3.100 libavcodec 62. 3.101 / 62. 3.101 libavformat 62. 1.100 / 62. 1.100 libavdevice 62. 0.100 / 62. 0.100 libavfilter 11. 0.100 / 11. 0.100 libswscale 9. 0.100 / 9. 0.100 libswresample 6. 0.100 / 6. 0.100 [kux @ 0x517000000080] Read FLV header error, input file is not a standard flv format, first PreviousTagSize0 always is 0 [kux @ 0x517000000080] Negative cts, previous timestamps might be wrong. Truncating packet of size 6514015 to 571 [kux @ 0x517000000080] Packet corrupt (stream = 0, dts = 6255619). [kux @ 0x517000000080] Track size mismatch: 6513444! [extract_extradata @ 0x50e000000100] Failed to parse header of NALU (type 0): "Invalid data found when processing input". Skipping NALU. Last message repeated 1 times [NULL @ 0x519000000f80] VPS 7 does not exist [NULL @ 0x519000000f80] Failed to parse header of NALU (type 0): "Invalid data found when processing input". Skipping NALU. Last message repeated 1 times [NULL @ 0x519000000f80] VPS 7 does not exist [NULL @ 0x519000000f80] PPS id out of range: 2 [extract_extradata @ 0x50e000000100] Failed to parse header of NALU (type 0): "Invalid data found when processing input". Skipping NALU. Last message repeated 1 times [hevc @ 0x519000000f80] VPS 7 does not exist [hevc @ 0x519000000f80] Failed to parse header of NALU (type 0): "Invalid data found when processing input". Skipping NALU. Last message repeated 1 times [hevc @ 0x519000000f80] VPS 7 does not exist [hevc @ 0x519000000f80] Skipping invalid undecodable NALU: 33 [hevc @ 0x519000000f80] Unknown profile bitstream Last message repeated 1 times [hevc @ 0x519000000f80] sps_max_num_reorder_pics out of range: 2 [hevc @ 0x519000000f80] Overread PPS by 8 bits [hevc @ 0x519000000f80] Overread slice header by 8 bits [hevc @ 0x519000000f80] Skipping invalid undecodable NALU: 0 [hevc @ 0x519000000f80] Unknown profile bitstream [hevc @ 0x519000000f80] SPS id out of range: 32 [hevc @ 0x519000000f80] Skipping invalid undecodable NALU: 33 [hevc @ 0x519000000f80] VPS 0 does not exist [hevc @ 0x519000000f80] Skipping invalid undecodable NALU: 33 [hevc @ 0x519000000f80] Overread slice header by 8 bits [hevc @ 0x519000000f80] Skipping invalid undecodable NALU: 0 [hevc @ 0x519000000f80] Could not find ref with POC -30 [hevc @ 0x519000000f80] Could not find ref with POC 127 [hevc @ 0x519000000f80] Could not find ref with POC 130 [hevc @ 0x519000000f80] Could not find ref with POC 135 [hevc @ 0x519000000f80] Could not find ref with POC 146 [hevc @ 0x519000000f80] Could not find ref with POC 148 [hevc @ 0x519000000f80] Could not find ref with POC 150 [hevc @ 0x519000000f80] Could not find ref with POC 152 [hevc @ 0x519000000f80] Could not find ref with POC 174 [hevc @ 0x519000000f80] Could not find ref with POC 176 [hevc @ 0x519000000f80] Could not find ref with POC 1 [hevc @ 0x519000000f80] Could not find ref with POC 2 [hevc @ 0x519000000f80] Could not find ref with POC 13 [hevc @ 0x519000000f80] PTL information too short [hevc @ 0x519000000f80] Skipping invalid undecodable NALU: 32 [hevc @ 0x519000000f80] Two slices reporting being the first in the same frame. [hevc @ 0x519000000f80] Skipping invalid undecodable NALU: 0 [hevc @ 0x519000000f80] PTL information too short [hevc @ 0x519000000f80] Skipping invalid undecodable NALU: 32 AddressSanitizer:DEADLYSIGNAL ================================================================= ==10759==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x55b9d2cdc5fc bp 0x7ffcb77398e0 sp 0x7ffcb7738f60 T0) ==10759==The signal is caused by a READ memory access. ==10759==Hint: address points to the zero page. #0 0x55b9d2cdc5fc in hls_prediction_unit /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:2147:16 #1 0x55b9d2cd9797 in hls_coding_unit /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:2469:9 #2 0x55b9d2cd8a2c in hls_coding_quadtree /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:2677:15 #3 0x55b9d2cd8549 in hls_coding_quadtree /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:2642:21 #4 0x55b9d2cd2691 in hls_decode_entry /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:2782:21 #5 0x55b9d2cc9a33 in decode_slice_data /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:3075:12 #6 0x55b9d2cbf0b4 in decode_slice /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:3589:11 #7 0x55b9d2cbd916 in decode_nal_unit /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:3657:15 #8 0x55b9d2cbca67 in decode_nal_units /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:3770:15 #9 0x55b9d2cb69d8 in hevc_receive_frame /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:3872:14 #10 0x55b9d2950998 in ff_decode_receive_frame_internal /media/user /6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/decode.c:618:19 #11 0x55b9d29530b4 in decode_receive_frame_internal /media/user /6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/decode.c:650:15 #12 0x55b9d2952fad in avcodec_send_packet /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/decode.c:726:15 #13 0x55b9d1ead07b in try_decode_frame /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavformat/demux.c:2146:19 #14 0x55b9d1ea75c5 in avformat_find_stream_info /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavformat/demux.c:2828:9 #15 0x55b9d100f7d0 in ifile_open /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/fftools/ffmpeg_demux.c:1814:15 #16 0x55b9d1073ee4 in open_files /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/fftools/ffmpeg_opt.c:1366:15 #17 0x55b9d1073928 in ffmpeg_parse_options /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/fftools/ffmpeg_opt.c:1415:11 #18 0x55b9d10b6fd9 in main /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/fftools/ffmpeg.c:991:11 #19 0x7fb6b3a33ca7 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #20 0x7fb6b3a33d64 in __libc_start_main csu/../csu/libc-start.c:360:3 #21 0x55b9d0f18710 in _start (/media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/ffmpeg+0x521710) (BuildId: 379ac85827c85a62a3da71cc682c7649d933e230) ==10759==Register values: rax = 0x0000000000000000 rbx = 0x00007ffcb7738f60 rcx = 0x0000000000000000 rdx = 0x0000000000000002 rdi = 0x00007fb6b27c8dec rsi = 0x0000000000000000 rbp = 0x00007ffcb77398e0 rsp = 0x00007ffcb7738f60 r8 = 0x00000ff6d64f91bd r9 = 0x00007fb6b27c8df7 r10 = 0x00000ff6d64f91be r11 = 0x00000ff7564f11b8 r12 = 0x0000000000000000 r13 = 0x00007ffcb773e318 r14 = 0x0000000000000003 r15 = 0x000055b9d5b831b0 AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/hevc/hevcdec.c:2147:16 in hls_prediction_unit ==10759==ABORTING }}} [[Image(https://github.com/sigdevel/pocs/blob/main/res/FFmpeg/ffmpeg/3/3_ffmp…]] Poc-sample was uploaded to https://streams.videolan.org/upload/ -- Ticket URL: <https://trac.ffmpeg.org/ticket/11652> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11639(ffmpeg:new): libavcodec/aac/aacdec.c:195:27 SEGV in frame_configure_elements
by FFmpeg 06 Jul '25

06 Jul '25

#11639: libavcodec/aac/aacdec.c:195:27 SEGV in frame_configure_elements ----------------------------------+---------------------------------- Reporter: sigdevel | Type: defect Status: new | Priority: normal Component: ffmpeg | Version: 7.1 Keywords: SIGSEGV | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ----------------------------------+---------------------------------- Summary of the bug: Crafted MP4 file containing invalid metadata (negative time scales in mvhd/mdhd atoms, excessive sample size of 4294966935 and zero-duration smples) triggers a SEGV in the AAC decoder during USAC initialization, where frame_configure_elements attempts a WRITE memory access at address 0x70 due to an uninitialized/invalid Channel element pointer when processing the malformed audio configuration How to reproduce: {{{ ./ffmpeg -i ./2_poc_libavcodec_aac_aacdec_c_195 -f null }}} ENV: {{{ ffmpeg OS version: 7.1.1-1+b1 ; ffmpeg debug version: N-119918-gee1f79b0fa (ffmpeg commit hash ee1f79b0fa4c82da9c19328b049b593c71611402) ; built on: 6.12.25-amd64 ; build opts debug: --disable-shared --enable-static --disable-doc --enable- gpl --enable-libass --enable-libfreetype --enable-libmp3lame --enable- libopus --enable-libvorbis --enable-libx264 --enable-libx265 --enable- nonfree --toolchain=clang-asan --enable-debug=3 --disable-optimizations --disable-stripping ; }}} Asan output: {{{ == ffmpeg version N-119886-g52441bd4cd Copyright (c) 2000-2025 the FFmpeg developers built with Debian clang version 19.1.7 (1+b1) configuration: --disable-shared --enable-static --disable-doc --enable- gpl --enable-libass --enable-libfreetype --enable-libmp3lame --enable- libopus --enable-libvorbis --enable-libx264 --enable-libx265 --enable- nonfree --toolchain=clang-asan --enable-debug=3 --disable-optimizations --disable-stripping libavutil 60. 3.100 / 60. 3.100 libavcodec 62. 3.101 / 62. 3.101 libavformat 62. 1.100 / 62. 1.100 libavdevice 62. 0.100 / 62. 0.100 libavfilter 11. 0.100 / 11. 0.100 libswscale 9. 0.100 / 9. 0.100 libswresample 6. 0.100 / 6. 0.100 Trailing option(s) found in the command: may be ignored. [mov,mp4,m4a,3gp,3g2,mj2 @ 0x517000000080] Invalid mvhd time scale -956300712, defaulting to 1 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x517000000080] Invalid mdhd time scale -1761563580, defaulting to 1 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x517000000080] Sample size 4294966935 is too large [mov,mp4,m4a,3gp,3g2,mj2 @ 0x517000000080] All samples in data stream index:id [3:4] have zero duration, stream set to be discarded by default. Override using AVStream->discard or -discard for ffmpeg command. AddressSanitizer:DEADLYSIGNAL ================================================================= ==88932==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000070 (pc 0x55bcf83bbc74 bp 0x7ffd58251870 sp 0x7ffd58251770 T0) ==88932==The signal is caused by a WRITE memory access. ==88932==Hint: address points to the zero page. #0 0x55bcf83bbc74 in frame_configure_elements /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/aac/aacdec.c:195:27 #1 0x55bcf83ba731 in ff_aac_output_configure /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/aac/aacdec.c:518:20 #2 0x55bcf83bc848 in ff_aac_get_che /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/aac/aacdec.c:632:13 #3 0x55bcf83f3ad2 in ff_aac_usac_reset_state /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/aac/aacdec_usac.c:308:15 #4 0x55bcf83f5980 in ff_aac_usac_config_decode /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/aac/aacdec_usac.c:553:11 #5 0x55bcf83c8a93 in decode_audio_specific_config_gb /media/user /6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/aac/aacdec.c:1053:20 #6 0x55bcf83bed97 in decode_audio_specific_config /media/user /6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/aac/aacdec.c:1097:12 #7 0x55bcf83be4d6 in ff_aac_decode_init /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/aac/aacdec.c:1193:20 #8 0x55bcf83e3a66 in ff_aac_decode_init_float /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/aac/aacdec_float.c:181:12 #9 0x55bcf671b34f in avcodec_open2 /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/avcodec.c:336:19 #10 0x55bcf5fea1de in avformat_find_stream_info /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavformat/demux.c:2592:21 #11 0x55bcf51527d0 in ifile_open /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/fftools/ffmpeg_demux.c:1814:15 #12 0x55bcf51b6f94 in open_files /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/fftools/ffmpeg_opt.c:1366:15 #13 0x55bcf51b69d8 in ffmpeg_parse_options /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/fftools/ffmpeg_opt.c:1415:11 #14 0x55bcf51fa099 in main /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/fftools/ffmpeg.c:991:11 #15 0x7ffa2c433ca7 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #16 0x7ffa2c433d64 in __libc_start_main csu/../csu/libc-start.c:360:3 #17 0x55bcf505b710 in _start (/media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/ffmpeg+0x521710) (BuildId: d2246b878abfa9a260cfb4c2c78620ba94243a83) ==88932==Register values: rax = 0x0000000000000070 rbx = 0x00007ffd58251880 rcx = 0x00000000000001f8 rdx = 0x0000000000000018 rdi = 0x0000000000000000 rsi = 0x000052d000023f10 rbp = 0x00007ffd58251870 rsp = 0x00007ffd58251770 r8 = 0x00000a32000003fc r9 = 0x0000519000001ff7 r10 = 0x00000a32000003fe r11 = 0x00000a327fff83f8 r12 = 0x0000000000000000 r13 = 0x00007ffd58255908 r14 = 0x00007ffa2e5af000 r15 = 0x000055bcf9ccb1b0 AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV /media/user/6d3eeb8a- a93b-4220-bb13-a4e488ce0ce2/gpac/runtime/ffmpeg_asan/libavcodec/aac/aacdec.c:195:27 in frame_configure_elements ==88932==ABORTING }}} [[Image(https://github.com/sigdevel/pocs/blob/d65a0c4ece90b07878ae098f93d925c…]] Poc-sample was uploaded to https://streams.videolan.org/upload/ -- Ticket URL: <https://trac.ffmpeg.org/ticket/11639> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

1 6

#11658(undetermined:new): libx265 lacks a -level option
by FFmpeg 06 Jul '25

06 Jul '25

#11658: libx265 lacks a -level option -------------------------------------+------------------------------------- Reporter: Boopboop | Type: | enhancement Status: new | Priority: normal Component: | Version: git- undetermined | master Keywords: libx265 | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: {{{-level:v}}} has been a widely available argument to video encoders, yet libx265 ''silently'' ignores it. It does not complain about an extraneous -level:v which it doesn't recognize. It only became obvious once I tried to specify Main 4.1 but got High 4.0 no matter what. x265 has this level-idc option to specify a level, and passing {{{-x265-params level-idc=4.1}}} works as intended. How to reproduce: {{{ % ffmpeg -report -loglevel 99 -to 1 -i DSC_0021.MOV -an -c:v libx265 -profile:v main10 -level:v 4.1 -bufsize 20M -maxrate 20M -preset:v veryslow -x265-params pools=6:frame-threads=1:vbv-init=0.9 DSC_0021.mp4 ffmpeg version N-120196-g6b028859d9 Copyright (c) 2000-2025 the FFmpeg developers built with Apple clang version 17.0.0 (clang-1700.0.13.5) configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/HEAD-6b02885_3 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host- cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable- libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable- libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable- libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable- libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable- libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon libavutil 60. 4.101 / 60. 4.101 libavcodec 62. 5.100 / 62. 5.100 libavformat 62. 1.101 / 62. 1.101 libavdevice 62. 0.100 / 62. 0.100 libavfilter 11. 1.100 / 11. 1.100 libswscale 9. 0.100 / 9. 0.100 libswresample 6. 0.100 / 6. 0.100 (Input file is 1080p25. Sample size within Main10 4.0) (20Mb/s is beyond Main10 4.0, but within specs for both Main10 4.1 and High10 4.0) (snip) x265 [info]: HEVC encoder version 4.1+1-1d117be x265 [info]: build info [Mac OS X][clang 17.0.0][64 bit] 10bit x265 [info]: using cpu capabilities: NEON Neon_DotProd Neon_I8MM x265 [info]: Main 10 profile, Level-4 (High tier) <= Here x265 [info]: Thread pool created using 6 threads x265 [info]: Slices : 1 x265 [info]: frame threads / pool features : 1 / wpp(17 rows) x265 [info]: Coding QT: max CU size, min CU size : 64 / 8 x265 [info]: Residual QT: max TU size, max depth : 32 / 3 inter / 3 intra x265 [info]: ME / range / subpel / merge : star / 57 / 4 / 5 x265 [info]: Keyframe min / max / scenecut / bias : 25 / 250 / 40 / 5.00 x265 [info]: Lookahead / bframes / badapt : 40 / 8 / 2 x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 1 x265 [info]: References / ref-limit cu / depth : 5 / off / off x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1 x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60 x265 [info]: VBV/HRD buffer / max-rate / init : 20000 / 20000 / 0.750 x265 [info]: tools: rect amp rd=6 psy-rd=2.00 rdoq=2 psy-rdoq=1.00 rskip mode=1 x265 [info]: tools: signhide tmvp b-intra strong-intra-smoothing deblock sao x265 [info]: tools: dhdr10-info }}} Compare with: {{{ % ffmpeg -report -loglevel 99 -to 1 -i DSC_0021.MOV -an -c:v libx265 -profile:v main10 -bufsize 20M -maxrate 20M -preset:v veryslow -x265-params pools=6:frame-threads=1:vbv-init=0.9:level-idc=4.1 DSC_0021.mp4 (snip) x265 [info]: HEVC encoder version 4.1+1-1d117be x265 [info]: build info [Mac OS X][clang 17.0.0][64 bit] 10bit x265 [info]: using cpu capabilities: NEON Neon_DotProd Neon_I8MM x265 [info]: Main 10 profile, Level-4.1 (Main tier) <= Main 4.1 is enough, high tier not chosen x265 [info]: Thread pool created using 6 threads x265 [info]: Slices : 1 x265 [info]: frame threads / pool features : 1 / wpp(17 rows) x265 [info]: Coding QT: max CU size, min CU size : 64 / 8 x265 [info]: Residual QT: max TU size, max depth : 32 / 3 inter / 3 intra x265 [info]: ME / range / subpel / merge : star / 57 / 4 / 5 x265 [info]: Keyframe min / max / scenecut / bias : 25 / 250 / 40 / 5.00 x265 [info]: Lookahead / bframes / badapt : 40 / 8 / 2 x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 1 x265 [info]: References / ref-limit cu / depth : 5 / off / off x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1 x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60 x265 [info]: VBV/HRD buffer / max-rate / init : 20000 / 20000 / 0.750 x265 [info]: tools: rect amp rd=6 psy-rd=2.00 rdoq=2 psy-rdoq=1.00 rskip mode=1 x265 [info]: tools: signhide tmvp b-intra strong-intra-smoothing deblock sao x265 [info]: tools: dhdr10-info }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/11658> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

1 0

#11657(undetermined:new): libx265: -bufsize and -maxrate does not complement -x265-params vbv-init=0.9
by FFmpeg 06 Jul '25

06 Jul '25

#11657: libx265: -bufsize and -maxrate does not complement -x265-params vbv- init=0.9 -------------------------------------+------------------------------------- Reporter: Boopboop | Type: defect Status: new | Priority: normal Component: | Version: git- undetermined | master Keywords: libx265 vbv | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: specifying the general {{{-bufsize}}} and {{{-maxrate}}} options, instead of using {{{-x265-params vbv-bufsize=:vbv- maxrate=}}}, forces vbv-init=0.75, instead of working together with a {{{-x265-params vbv-bufsize=0.9}}}, or leaving it out and letting it default to x265's default 0.9. How to reproduce: {{{ % ffmpeg -report -loglevel 99 -to 1 -i DSC_0021.MOV -an -c:v libx265 -profile:v main10 -level:v 4.1 -bufsize 20M -maxrate 20M -preset:v veryslow -x265-params pools=6:frame-threads=1:vbv-init=0.9 DSC_0021.mp4 ffmpeg version N-120196-g6b028859d9 Copyright (c) 2000-2025 the FFmpeg developers built with Apple clang version 17.0.0 (clang-1700.0.13.5) configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/HEAD-6b02885_3 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host- cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable- libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable- libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable- libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable- libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable- libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon libavutil 60. 4.101 / 60. 4.101 libavcodec 62. 5.100 / 62. 5.100 libavformat 62. 1.101 / 62. 1.101 libavdevice 62. 0.100 / 62. 0.100 libavfilter 11. 1.100 / 11. 1.100 libswscale 9. 0.100 / 9. 0.100 libswresample 6. 0.100 / 6. 0.100 (snip) x265 [info]: HEVC encoder version 4.1+1-1d117be x265 [info]: build info [Mac OS X][clang 16.0.0][64 bit] 10bit x265 [info]: using cpu capabilities: NEON Neon_DotProd Neon_I8MM x265 [info]: Main 10 profile, Level-4 (High tier) x265 [info]: Thread pool created using 6 threads x265 [info]: Slices : 1 x265 [info]: frame threads / pool features : 1 / wpp(17 rows) x265 [info]: Coding QT: max CU size, min CU size : 64 / 8 x265 [info]: Residual QT: max TU size, max depth : 32 / 3 inter / 3 intra x265 [info]: ME / range / subpel / merge : star / 57 / 4 / 5 x265 [info]: Keyframe min / max / scenecut / bias : 25 / 250 / 40 / 5.00 x265 [info]: Lookahead / bframes / badapt : 40 / 8 / 2 x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 1 x265 [info]: References / ref-limit cu / depth : 5 / off / off x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1 x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60 x265 [info]: VBV/HRD buffer / max-rate / init : 20000 / 20000 / 0.750 <= Here, init 0.75 instead of 0.9 x265 [info]: tools: rect amp rd=6 psy-rd=2.00 rdoq=2 psy-rdoq=1.00 rskip mode=1 x265 [info]: tools: signhide tmvp b-intra strong-intra-smoothing deblock sao x265 [info]: tools: dhdr10-info }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/11657> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

1 2

#11655(avcodec:new): Cuda/nvdec hwaccel outputs P016LE instead of P010LE on 10bit video
by FFmpeg 05 Jul '25

05 Jul '25

#11655: Cuda/nvdec hwaccel outputs P016LE instead of P010LE on 10bit video -------------------------------------+------------------------------------- Reporter: nyanmisaka | Type: defect Status: new | Priority: normal Component: avcodec | Version: git- Keywords: cuda nvdec | master nvidia hwaccel | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: Cuda/nvdec hwaccel outputs P016LE instead of P010LE on 10bit video. How to reproduce: {{{ ffmpeg -hwaccel cuda -hwaccel_output_format cuda \ -i /path/to/10bit-video -an -sn -dn -vf hwdownload,format=p010le -f null - ... [hwdownload @ 0000020612888240] Invalid output format p010le for hwframe download. [Parsed_hwdownload_0 @ 00000206106e7140] Failed to configure output pad on Parsed_hwdownload_0 [vf#0:0 @ 0000020610752240] Error reinitializing filters! }}} Regression caused by https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/30e6effff94c6f4310aa2db5719… For correctness and consistency with the old behavior, a change like this is required in the above commit: {{{ + } else { + frames_ctx->sw_format = sw_desc->comp[0].depth == 10 ? AV_PIX_FMT_P010LE : AV_PIX_FMT_P016LE; + } }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/11655> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

1 13

#11656(ffmpeg:new): -bitexact does not remove metadata encoder tag in OGG Vorbis files
by FFmpeg 05 Jul '25

05 Jul '25

#11656: -bitexact does not remove metadata encoder tag in OGG Vorbis files -------------------------------------+------------------------------------- Reporter: Iwan | Type: defect Gabovitch | Status: new | Priority: normal Component: ffmpeg | Version: git- | master Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: `-bitexact` removes the metadata encoder tag for wav, flac and mp3 files, but not for ogg files. Let's generate a wav: {{{ $ ffmpeg -f lavfi -i "sine=frequency=1000:duration=0.1:sample_rate=44100" -af "volume=0.2" input.wav ffmpeg version 2025-07-01-git-11d1b71c31-full_build-www.gyan.dev Copyright (c) 2000-2025 the FFmpeg developers built with gcc 15.1.0 (Rev4, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable- w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-lcms2 --enable-libxml2 --enable-gmp --enable- bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-libdvdnav --enable-libdvdread --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable- libdav1d --enable-libdavs2 --enable-libopenjpeg --enable-libquirc --enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-liboapv --enable-libqrencode --enable-librav1e --enable-libsvtav1 --enable- libvvenc --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs2 --enable-libxeve --enable-libxvid --enable-libaom --enable-libjxl --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable- liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable- amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-openal --enable-libgme --enable-libmodplug --enable-libopenmpt --enable- libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable- libilbc --enable-libgsm --enable-liblc3 --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable- librubberband --enable-libsoxr --enable-chromaprint libavutil 60. 4.101 / 60. 4.101 libavcodec 62. 4.103 / 62. 4.103 libavformat 62. 1.101 / 62. 1.101 libavdevice 62. 0.100 / 62. 0.100 libavfilter 11. 0.100 / 11. 0.100 libswscale 9. 0.100 / 9. 0.100 libswresample 6. 0.100 / 6. 0.100 [out @ 00000187e0830640] The "sample_fmts" option is deprecated: set the supported sample formats [out @ 00000187e0830640] The "all_channel_counts" option is deprecated: accept all channel counts Input #0, lavfi, from 'sine=frequency=1000:duration=0.1:sample_rate=44100': Duration: N/A, start: 0.000000, bitrate: 705 kb/s Stream #0:0: Audio: pcm_s16le, 44100 Hz, mono, s16, 705 kb/s Stream mapping: Stream #0:0 -> #0:0 (pcm_s16le (native) -> pcm_s16le (native)) Press [q] to stop, [?] for help Output #0, wav, to 'input.wav': Metadata: ISFT : Lavf62.1.101 Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, s16, 705 kb/s Metadata: encoder : Lavc62.4.103 pcm_s16le [out#0/wav @ 00000187e082f500] video:0KiB audio:9KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.884354% size= 9KiB time=00:00:00.10 bitrate= 711.8kbits/s speed=58.7x elapsed=0:00:00.00 }}} Let's confirm the metadata: {{{ $ ffprobe.exe -hide_banner input.wav Input #0, wav, from 'input.wav': Metadata: encoder : Lavf62.1.101 Duration: 00:00:00.10, bitrate: 711 kb/s Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 1 channels, s16, 705 kb/s }}} Let's convert to flac with `-bitexact`: {{{ $ ffmpeg -hide_banner -i input.wav -bitexact output.flac [aist#0:0/pcm_s16le @ 00000205f2020900] Guessed Channel Layout: mono Input #0, wav, from 'input.wav': Metadata: encoder : Lavf62.1.101 Duration: 00:00:00.10, bitrate: 711 kb/s Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, s16, 705 kb/s Stream mapping: Stream #0:0 -> #0:0 (pcm_s16le (native) -> flac (native)) Press [q] to stop, [?] for help Output #0, flac, to 'output.flac': Stream #0:0: Audio: flac, 44100 Hz, mono, s16, 128 kb/s Metadata: encoder : Lavc flac [out#0/flac @ 00000205f2021bc0] video:0KiB audio:1KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 707.455013% size= 9KiB time=00:00:00.10 bitrate= 753.8kbits/s speed=42.3x elapsed=0:00:00.00 }}} Even though the output shows `encoder` `: Lavc flac`, it does not get written: {{{ $ ffprobe.exe -hide_banner output.flac Input #0, flac, from 'output.flac': Duration: 00:00:00.10, bitrate: 753 kb/s Stream #0:0: Audio: flac, 44100 Hz, mono, s16 }}} Let's convert to ogg with `-bitexact`: {{{ $ ffmpeg -hide_banner -i input.wav -bitexact output.ogg [aist#0:0/pcm_s16le @ 00000256f3f20900] Guessed Channel Layout: mono Input #0, wav, from 'input.wav': Metadata: encoder : Lavf62.1.101 Duration: 00:00:00.10, bitrate: 711 kb/s Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, s16, 705 kb/s Stream mapping: Stream #0:0 -> #0:0 (pcm_s16le (native) -> vorbis (libvorbis)) Press [q] to stop, [?] for help Output #0, ogg, to 'output.ogg': Stream #0:0: Audio: vorbis, 44100 Hz, mono, fltp Metadata: encoder : Lavc libvorbis [out#0/ogg @ 00000256f3f21bc0] video:0KiB audio:0KiB subtitle:0KiB other streams:0KiB global headers:3KiB muxing overhead: 743.708609% size= 4KiB time=00:00:00.10 bitrate= 305.8kbits/s speed=9.99x elapsed=0:00:00.01 }}} This time, the metadata is in the file: {{{ $ ffprobe.exe -hide_banner output.ogg Input #0, ogg, from 'output.ogg': Duration: 00:00:00.10, start: 0.000000, bitrate: 305 kb/s Stream #0:0: Audio: vorbis, 44100 Hz, mono, fltp, 80 kb/s Metadata: encoder : Lavc libvorbis }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/11656> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11578(ffmpeg:new): Waveform discontinuity in decoded E-AC-3
by FFmpeg 05 Jul '25

05 Jul '25

#11578: Waveform discontinuity in decoded E-AC-3 --------------------------------+--------------------------------------- Reporter: j7n | Type: defect Status: new | Priority: normal Component: ffmpeg | Version: unspecified Keywords: eac3 | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | --------------------------------+--------------------------------------- Summary of the bug: Specific E-AC-3 streams with Atmos occasionally fade in from zero amplitude at a block boundary, producing a click. It only happens on the first playthrough. Rewinding to before the defect in the same player session makes the fault disappear. Channels higher than 0 in a 5.1 layout are affected. The official Dolby decoder works fine. The streams were acquired from Apple Music. whatifwe.ec3 : glitch at 187136 pourque.ec3 : glitch at 41728 How to reproduce: {{{ % ffmpeg -i pourque.ec3 pourque.wav ffmpeg version n7.1.1-10-gc6c20e04cc-20250507 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/11578> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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