#11613: ffv1_vulkan and level 4 does not work well
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Reporter: Andrew-R | Owner: (none)
Type: defect | Status: closed
Priority: normal | Component: avformat
Version: git-master | Resolution: fixed
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by Andrew-R):
It seems that ffv1_vulkan outputs
{{{
bash-5.1$ mediainfo frame-ffv1-vulkan.avi
General
Complete name : frame-ffv1-vulkan.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 81.4 MiB
Duration : 40 s 0 ms
Overall bit rate mode : Variable
Overall bit rate : 17.1 Mb/s
Frame rate : 25.000 FPS
Writing application : Lavf62.0.102
Video
ID : 0
Format : FFV1
Format version : Version 4.3
Codec ID : FFV1
Duration : 40 s 0 ms
Bit rate mode : Variable
Bit rate : 17.1 Mb/s
Width : 720 pixels
Height : 400 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Compression mode : Lossless
Bits/(Pixel*Frame) : 2.371
Stream size : 81.4 MiB (100%)
Conformance errors : 1
HEADER : Yes
version : Yes
LATERVERSION : LATERVERSION (conf, offset
0xD4)
}}}
FFV1 v 4.3
and software ffv1 encoder does
{{{
bash-5.1$ mediainfo frame-ffv1.avi
General
Complete name : frame-ffv1.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 55.4 MiB
Duration : 40 s 0 ms
Overall bit rate mode : Variable
Overall bit rate : 11.6 Mb/s
Frame rate : 25.000 FPS
Writing application : Lavf62.0.102
Video
ID : 0
Format : FFV1
Format version : Version 3.4
Format settings, Slice count : 4 slices per frame
Codec ID : FFV1
Duration : 40 s 0 ms
Bit rate mode : Variable
Bit rate : 11.6 Mb/s
Width : 720 pixels
Height : 400 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossless
Bits/(Pixel*Frame) : 1.612
Stream size : 55.4 MiB (100%)
coder_type : Golomb Rice
ErrorDetectionType : Per slice
}}}
FFV1 version 3.4/Colomb
So, without any option sw encoded ffv1 plays in earlier ffmpeg/mpv and hw
encoded ffv1 only plays in new ffplay (and may be mpv linked to it)
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Ticket URL: <https://trac.ffmpeg.org/ticket/11613#comment:7>
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