#11164: visual macroblock error with mpeg2video encoding ------------------------------------+----------------------------------- Reporter: dave rice | Owner: (none) Type: defect | Status: new Priority: normal | Component: avcodec Version: 6.1.1 | Resolution: Keywords: mpeg2video | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ------------------------------------+----------------------------------- Description changed by dave rice: Old description:

Summary of the bug:

I've been using ffmpeg to create XDCam QuickTime files and found a regression or change in going from ffmpeg 5 to 6.

The simplest command I can create to demonstrate this problem is below. The ffmpeg@5 output looks fine and represents the input well, the ffmpeg@6 output shows some abundant macroblock errors.

How to reproduce:

This ffmpeg@5 output looks okay: {{{ % ffmpeg -y -i test.mp4 -c:v mpeg2video -non_linear_quant 1 -qmin 1 -pix_fmt yuv422p -vtag xd5b -q:v 1 -qmax 8 good.mov ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers built with Apple clang version 13.0.0 (clang-1300.0.29.30) configuration: --prefix=/usr/local/Cellar/ffmpeg/5.1.2_6 --enable- shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable- libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable- libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable- librubberband --enable-libsnappy --enable-libsrt --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 libavutil 57. 28.100 / 57. 28.100 libavcodec 59. 37.100 / 59. 37.100 libavformat 59. 27.100 / 59. 27.100 libavdevice 59. 7.100 / 59. 7.100 libavfilter 8. 44.100 / 8. 44.100 libswscale 6. 7.100 / 6. 7.100 libswresample 4. 7.100 / 4. 7.100 libpostproc 56. 6.100 / 56. 6.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf60.16.100 Duration: 00:00:05.07, start: 0.000000, bitrate: 6680 kb/s Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080, 4908 kb/s, 23.98 fps, 23.98 tbr, 24k tbn (default) Metadata: handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : AVC Coding Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default) Metadata: handler_name : #Mainconcept MP4 Sound Media Handler vendor_id : [0][0][0][0] Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> mpeg2video (native)) Stream #0:1 -> #0:1 (aac (native) -> aac (native)) Press [q] to stop, [?] for help Output #0, mov, to 'good.mov': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf59.27.100 Stream #0:0(eng): Video: mpeg2video (4:2:2) (xd5b / 0x62356478), yuv422p(tv, bt709, progressive), 1920x1080, q=2-31, 200 kb/s, 23.98 fps, 24k tbn (default) Metadata: handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : Lavc59.37.100 mpeg2video Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default) Metadata: handler_name : #Mainconcept MP4 Sound Media Handler vendor_id : [0][0][0][0] encoder : Lavc59.37.100 aac frame= 121 fps=0.0 q=1.0 Lsize= 17383kB time=00:00:05.01 bitrate=28405.3kbits/s speed=11.9x video:17298kB audio:81kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.022841% [aac @ 0x7fc93af05d40] Qavg: 565.772

}}}

This ffmpeg@6 output has visual artifacts. {{{ % ffmpeg -y -i test.mp4 -c:v mpeg2video -non_linear_quant 1 -qmin 1 -pix_fmt yuv422p -vtag xd5b -q:v 1 -qmax 8 bad.mov ffmpeg version 6.1.2 Copyright (c) 2000-2024 the FFmpeg developers built with Apple clang version 14.0.0 (clang-1400.0.29.202) configuration: --prefix='/opt/homebrew/Cellar/ffmpeg@6/6.1.2_1' --enable-shared --enable-pthreads --enable-version3 --cc=clang --host- cflags= --host-ldflags= --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-libopenvino --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon libavutil 58. 29.100 / 58. 29.100 libavcodec 60. 31.102 / 60. 31.102 libavformat 60. 16.100 / 60. 16.100 libavdevice 60. 3.100 / 60. 3.100 libavfilter 9. 12.100 / 9. 12.100 libswscale 7. 5.100 / 7. 5.100 libswresample 4. 12.100 / 4. 12.100 libpostproc 57. 3.100 / 57. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf60.16.100 Duration: 00:00:05.07, start: 0.000000, bitrate: 6680 kb/s Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080, 4908 kb/s, 23.98 fps, 23.98 tbr, 24k tbn (default) Metadata: handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : AVC Coding Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default) Metadata: handler_name : #Mainconcept MP4 Sound Media Handler vendor_id : [0][0][0][0] Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> mpeg2video (native)) Stream #0:1 -> #0:1 (aac (native) -> aac (native)) Press [q] to stop, [?] for help Output #0, mov, to 'bad.mov': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf60.16.100 Stream #0:0(eng): Video: mpeg2video (4:2:2) (xd5b / 0x62356478), yuv422p(tv, bt709, progressive), 1920x1080, q=2-31, 200 kb/s, 23.98 fps, 24k tbn (default) Metadata: handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : Lavc60.31.102 mpeg2video Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default) Metadata: handler_name : #Mainconcept MP4 Sound Media Handler vendor_id : [0][0][0][0] encoder : Lavc60.31.102 aac [out#0/mov @ 0x14a705d10] video:17378kB audio:82kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.022736% frame= 121 fps=0.0 q=1.0 Lsize= 17464kB time=00:00:04.99 bitrate=28658.8kbits/s speed=13.1x [aac @ 0x14a65b480] Qavg: 566.517

}}}

Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.

New description: Summary of the bug: I've been using ffmpeg to create XDCam QuickTime files and found a regression or change in going from ffmpeg 5 to 6. The simplest command I can create to demonstrate this problem is below. The ffmpeg@5 output looks fine and represents the input well, the ffmpeg@6 output shows some abundant macroblock errors. How to reproduce: This ffmpeg@5 output looks okay: {{{ % ffmpeg -y -i input_that_creates_visual_error_with_ffmpeg6_but_not_5.mp4 -c:v mpeg2video -non_linear_quant 1 -qmin 1 -pix_fmt yuv422p -vtag xd5b -q:v 1 -qmax 8 good.mov ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers built with Apple clang version 13.0.0 (clang-1300.0.29.30) configuration: --prefix=/usr/local/Cellar/ffmpeg/5.1.2_6 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host- ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable- libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable- librubberband --enable-libsnappy --enable-libsrt --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 libavutil 57. 28.100 / 57. 28.100 libavcodec 59. 37.100 / 59. 37.100 libavformat 59. 27.100 / 59. 27.100 libavdevice 59. 7.100 / 59. 7.100 libavfilter 8. 44.100 / 8. 44.100 libswscale 6. 7.100 / 6. 7.100 libswresample 4. 7.100 / 4. 7.100 libpostproc 56. 6.100 / 56. 6.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input_that_creates_visual_error_with_ffmpeg6_but_not_5.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf59.27.100 Duration: 00:00:02.04, start: 0.000000, bitrate: 5301 kb/s Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080, 2982 kb/s, 23.98 fps, 23.98 tbr, 24k tbn (default) Metadata: handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : AVC Coding Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> mpeg2video (native)) Press [q] to stop, [?] for help Output #0, mov, to 'good.mov': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf59.27.100 Stream #0:0(eng): Video: mpeg2video (4:2:2) (xd5b / 0x62356478), yuv422p(tv, bt709, progressive), 1920x1080, q=2-31, 200 kb/s, 23.98 fps, 24k tbn (default) Metadata: handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : Lavc59.37.100 mpeg2video Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A frame= 49 fps=0.0 q=1.0 Lsize= 5382kB time=00:00:01.96 bitrate=22491.4kbits/s speed=11.2x video:5381kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.019745% }}} This ffmpeg@6 output has visual artifacts. {{{ % ffmpeg -y -i input_that_creates_visual_error_with_ffmpeg6_but_not_5.mp4 -c:v mpeg2video -non_linear_quant 1 -qmin 1 -pix_fmt yuv422p -vtag xd5b -q:v 1 -qmax 8 good.mov ffmpeg version 6.1.2 Copyright (c) 2000-2024 the FFmpeg developers built with Apple clang version 14.0.0 (clang-1400.0.29.202) configuration: --prefix='/opt/homebrew/Cellar/ffmpeg@6/6.1.2_1' --enable-shared --enable-pthreads --enable-version3 --cc=clang --host- cflags= --host-ldflags= --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-libopenvino --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable- videotoolbox --enable-audiotoolbox --enable-neon libavutil 58. 29.100 / 58. 29.100 libavcodec 60. 31.102 / 60. 31.102 libavformat 60. 16.100 / 60. 16.100 libavdevice 60. 3.100 / 60. 3.100 libavfilter 9. 12.100 / 9. 12.100 libswscale 7. 5.100 / 7. 5.100 libswresample 4. 12.100 / 4. 12.100 libpostproc 57. 3.100 / 57. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input_that_creates_visual_error_with_ffmpeg6_but_not_5.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf59.27.100 Duration: 00:00:02.04, start: 0.000000, bitrate: 5301 kb/s Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080, 2982 kb/s, 23.98 fps, 23.98 tbr, 24k tbn (default) Metadata: handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : AVC Coding Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> mpeg2video (native)) Press [q] to stop, [?] for help Output #0, mov, to 'good.mov': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf60.16.100 Stream #0:0(eng): Video: mpeg2video (4:2:2) (xd5b / 0x62356478), yuv422p(tv, bt709, progressive), 1920x1080, q=2-31, 200 kb/s, 23.98 fps, 24k tbn (default) Metadata: handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : Lavc60.31.102 mpeg2video Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A [out#0/mov @ 0x13fe04e70] video:5414kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.019627% frame= 49 fps=0.0 q=1.0 Lsize= 5415kB time=00:00:01.96 bitrate=22627.3kbits/s speed=14.8x }}} Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker. -- -- Ticket URL: <https://trac.ffmpeg.org/ticket/11164#comment:1> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

#11164: visual macroblock error with mpeg2video encoding ------------------------------------+----------------------------------- Reporter: dave rice | Owner: (none) Type: defect | Status: new Priority: normal | Component: avcodec Version: 6.1.1 | Resolution: Keywords: mpeg2video | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ------------------------------------+----------------------------------- Comment (by Marton Balint): I can't really reproduce this on linux, neither with 6.1.2, nor with git master. You should try to narrow down what causes this (e.g. try git master, and options such as -threads 1, -cpuflags 0)... -- Ticket URL: <https://trac.ffmpeg.org/ticket/11164#comment:3> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

#11164: visual macroblock error with mpeg2video encoding ------------------------------------+-------------------------------------- Reporter: dave rice | Owner: (none) Type: defect | Status: closed Priority: normal | Component: avcodec Version: 6.1.1 | Resolution: worksforme Keywords: mpeg2video | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ------------------------------------+-------------------------------------- Comment (by dave rice): Thanks @mkver. I tried again, I'm using ffmpeg 7 ``` ffmpeg -y -i input_that_creates_visual_error_with_ffmpeg6_but_not_5.mp4 -c:v mpeg2video -non_linear_quant 1 -qmin 1 -pix_fmt yuv422p -vtag xd5b -q:v 1 -qmax 8 good.mov ffmpeg version 7.1.1 Copyright (c) 2000-2025 the FFmpeg developers built with Apple clang version 16.0.0 (clang-1600.0.26.6) configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.1.1_2 --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 59. 39.100 / 59. 39.100 libavcodec 61. 19.101 / 61. 19.101 libavformat 61. 7.100 / 61. 7.100 libavdevice 61. 3.100 / 61. 3.100 libavfilter 10. 4.100 / 10. 4.100 libswscale 8. 3.100 / 8. 3.100 libswresample 5. 3.100 / 5. 3.100 libpostproc 58. 3.100 / 58. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input_that_creates_visual_error_with_ffmpeg6_but_not_5.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf59.27.100 Duration: 00:00:02.04, start: 0.000000, bitrate: 5301 kb/s Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080, 2982 kb/s, 23.98 fps, 23.98 tbr, 24k tbn (default) Metadata: handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : AVC Coding Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> mpeg2video (native)) Press [q] to stop, [?] for help Output #0, mov, to 'good.mov': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf61.7.100 Stream #0:0(eng): Video: mpeg2video (4:2:2) (xd5b / 0x62356478), yuv422p(tv, bt709, progressive), 1920x1080, q=2-31, 200 kb/s, 23.98 fps, 24k tbn (default) Metadata: handler_name : ?Mainconcept Video Media Handler vendor_id : [0][0][0][0] encoder : Lavc61.19.101 mpeg2video Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A [out#0/mov @ 0x600003bb83c0] video:5348KiB audio:0KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.019850% frame= 49 fps=0.0 q=1.0 Lsize= 5349KiB time=00:00:02.00 bitrate=21886.2kbits/s speed= 11x ``` In the output, I'm looking at the frame of 00:00:00.542: in the top line of text the tops of the letters seem to have black boxes over them. On line 3 the word "Executive" has parts obscured. The word "Head" on line 2 has an odd white blocks in the lower right corner of the "H". The next frame is similar. At frame 1.293 the word "Head" again has odd shapes to it. When I compare to the frames in the source they look very different. -- Ticket URL: <https://trac.ffmpeg.org/ticket/11164#comment:5> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker