[FFmpeg-trac] #11050(ffmpeg:new): Change in frame rate detection in dvvideo in v6.1 (was: Change in frame rate detection in dvvideo in v6)
FFmpeg
trac at avcodec.org
Sat Jun 8 20:11:47 EEST 2024
#11050: Change in frame rate detection in dvvideo in v6.1
-----------------------------------+----------------------------------
Reporter: Ian Young | Owner: (none)
Type: defect | Status: new
Priority: normal | Component: ffmpeg
Version: 6.1.1 | Resolution:
Keywords: dvvideo | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-----------------------------------+----------------------------------
Changes (by Ian Young):
* summary: Change in frame rate detection in dvvideo in v6 => Change in
frame rate detection in dvvideo in v6.1
Old description:
> I have a workflow that involves working with some very old `.dv` files.
> With newer versions of `ffmpeg`, it isn't working.
>
> Testing with the `linuxserver/ffmpeg` images, I can see the following in
> versions 4.4, 5.1 and 6.0:
>
> {{{
> ffprobe clip.dv
> ffprobe version 6.0 Copyright (c) 2007-2023 the FFmpeg developers
> built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
> configuration: --disable-debug --disable-doc --disable-ffplay --enable-
> cuvid --enable-ffprobe --enable-gpl --enable-libaom --enable-libass
> --enable-libfdk_aac --enable-libfreetype --enable-libkvazaar --enable-
> libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
> --enable-libopenjpeg --enable-libopus --enable-libsvtav1 --enable-
> libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-
> libvorbis --enable-libvpl --enable-libvpx --enable-libwebp --enable-
> libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-
> nonfree --enable-nvdec --enable-nvenc --enable-opencl --enable-openssl
> --enable-stripping --enable-vaapi --enable-vdpau --enable-version3
> libavutil 58. 2.100 / 58. 2.100
> libavcodec 60. 3.100 / 60. 3.100
> libavformat 60. 3.100 / 60. 3.100
> libavdevice 60. 1.100 / 60. 1.100
> libavfilter 9. 3.100 / 9. 3.100
> libswscale 7. 1.100 / 7. 1.100
> libswresample 4. 10.100 / 4. 10.100
> libpostproc 57. 1.100 / 57. 1.100
> [dv @ 0x5634ce7c8340] Estimating duration from bitrate, this may be
> inaccurate
> Input #0, dv, from 'clip.dv':
> Metadata:
> timecode : 00:00:21:04
> Duration: 01:01:20.72, start: 0.000000, bitrate: 28800 kb/s
> Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 64:45 DAR 16:9],
> 25000 kb/s, 25 fps, 25 tbr, 25 tbn
> Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
> }}}
>
> Specifically: `25 fps, 25 tbr, 25 tbn`
>
> Now the same under v6.1 and later (also tested under 7.0.1):
>
> {{{
> ffprobe clip.dv
> ffprobe version 6.1.1 Copyright (c) 2007-2023 the FFmpeg developers
> built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
> configuration: --disable-debug --disable-doc --disable-ffplay --enable-
> alsa --enable-cuvid --enable-ffprobe --enable-gpl --enable-libaom
> --enable-libass --enable-libfdk_aac --enable-libfreetype --enable-
> libkvazaar --enable-libmp3lame --enable-libopencore-amrnb --enable-
> libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-
> libplacebo --enable-librav1e --enable-libshaderc --enable-libsvtav1
> --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf
> --enable-libvorbis --enable-libvpl --enable-libvpx --enable-libwebp
> --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid
> --enable-libzimg --enable-nonfree --enable-nvdec --enable-nvenc --enable-
> cuda-llvm --enable-opencl --enable-openssl --enable-stripping --enable-
> vaapi --enable-vdpau --enable-version3 --enable-vulkan
> 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
> [dv @ 0x5566f329db40] Estimating duration from bitrate, this may be
> inaccurate
> Input #0, dv, from 'clip.dv':
> Metadata:
> timecode : 00:00:21:04
> Duration: 01:01:20.72, start: 0.000000, bitrate: 28800 kb/s
> Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 64:45 DAR 16:9],
> 28800 kb/s, 60k fps, 25 tbr, 60k tbn
> Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
> }}}
>
> Difference: `60k fps, 25 tbr, 60k tbn`
>
> In my actual workflow, there's an error when `ffmpeg` attempts to write
> 60000 into the trailer of a `.mov` file, but the above seems to indicate
> where that value is coming from.
>
> The files in question are around 13GB each, but the above behaviour shows
> up in the first 10MB so I'll try and attach one of those.
New description:
I have a workflow that involves working with some very old `.dv` files.
With newer versions of `ffmpeg`, it isn't working.
Testing with the `linuxserver/ffmpeg` images, I can see the following in
versions 4.4, 5.1 and 6.0:
{{{
ffprobe clip.dv
ffprobe version 6.0 Copyright (c) 2007-2023 the FFmpeg developers
built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
configuration: --disable-debug --disable-doc --disable-ffplay --enable-
cuvid --enable-ffprobe --enable-gpl --enable-libaom --enable-libass
--enable-libfdk_aac --enable-libfreetype --enable-libkvazaar --enable-
libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
libopenjpeg --enable-libopus --enable-libsvtav1 --enable-libtheora
--enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis
--enable-libvpl --enable-libvpx --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxml2 --enable-libxvid --enable-nonfree
--enable-nvdec --enable-nvenc --enable-opencl --enable-openssl --enable-
stripping --enable-vaapi --enable-vdpau --enable-version3
libavutil 58. 2.100 / 58. 2.100
libavcodec 60. 3.100 / 60. 3.100
libavformat 60. 3.100 / 60. 3.100
libavdevice 60. 1.100 / 60. 1.100
libavfilter 9. 3.100 / 9. 3.100
libswscale 7. 1.100 / 7. 1.100
libswresample 4. 10.100 / 4. 10.100
libpostproc 57. 1.100 / 57. 1.100
[dv @ 0x5634ce7c8340] Estimating duration from bitrate, this may be
inaccurate
Input #0, dv, from 'clip.dv':
Metadata:
timecode : 00:00:21:04
Duration: 01:01:20.72, start: 0.000000, bitrate: 28800 kb/s
Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 64:45 DAR 16:9],
25000 kb/s, 25 fps, 25 tbr, 25 tbn
Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
}}}
Specifically: `25 fps, 25 tbr, 25 tbn`
Now the same under v6.1 and later (also tested under 7.0.1):
{{{
ffprobe clip.dv
ffprobe version 6.1.1 Copyright (c) 2007-2023 the FFmpeg developers
built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
configuration: --disable-debug --disable-doc --disable-ffplay --enable-
alsa --enable-cuvid --enable-ffprobe --enable-gpl --enable-libaom
--enable-libass --enable-libfdk_aac --enable-libfreetype --enable-
libkvazaar --enable-libmp3lame --enable-libopencore-amrnb --enable-
libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-
libplacebo --enable-librav1e --enable-libshaderc --enable-libsvtav1
--enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf
--enable-libvorbis --enable-libvpl --enable-libvpx --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid
--enable-libzimg --enable-nonfree --enable-nvdec --enable-nvenc --enable-
cuda-llvm --enable-opencl --enable-openssl --enable-stripping --enable-
vaapi --enable-vdpau --enable-version3 --enable-vulkan
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
[dv @ 0x5566f329db40] Estimating duration from bitrate, this may be
inaccurate
Input #0, dv, from 'clip.dv':
Metadata:
timecode : 00:00:21:04
Duration: 01:01:20.72, start: 0.000000, bitrate: 28800 kb/s
Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 64:45 DAR 16:9],
28800 kb/s, 60k fps, 25 tbr, 60k tbn
Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
}}}
Difference: `60k fps, 25 tbr, 60k tbn`
In my actual workflow, there's an error when `ffmpeg` attempts to write
60000 into the trailer of a `.mov` file, but the above seems to indicate
where that value is coming from.
The files in question are around 13GB each, but the above behaviour shows
up in the first 2MB so I'll try and attach one of those.
--
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11050#comment:1>
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