#11381: ffmpeg has started outputting yuvj420p not yuv420p
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Reporter: ghjk987 | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Tried using current ffmpeg in Artix Linux, also happens in ffmpeg-git AUR
package built today
$ ffmpeg -i PC277219.AVI -c:v libx264 -crf 25 -pix_fmt yuv420p test.mp4
Input:
Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj422p(pc,
bt470bg/unknown/unknown), 640x480, 13891 kb/s, 30 fps, 30 tbr, 30 tbn
What it says it is making while encoding:
Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p(pc,
bt470bg/unknown/unknown, progressive), 640x480, q=2-31, 30 fps, 1000k tbn
Output of ffmpeg -i test.mp4 on resulting video file:
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661),
yuvj420p(pc, bt470bg/unknown/unknown, progressive), 640x480, 1411 kb/s, 30
fps, 30 tbr, 1000k tbn (default)
ffmpeg -i on video that was made in the same way late summer or autumn
2024
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661),
yuv420p(progressive), 640x480, 3346 kb/s, 30 fps, 30 tbr, 1000k tbn
(default)
The intention of making a video yuv420p is that it's multiplatform
compatible whereas if it's left as the original yuvj422p it may not play
on some Windows machines. As for the compatibility of yuvj420p, I have no
idea, but I was surprised to see that after I had specifically told it to
make something as yuv420p it then decided to make yuvj420p instead, and it
didn't seem to do this before.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11381>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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