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I am using mpv:
I have a mp4 file with the following codec details:
```
ffmpeg -i input.mp4
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x534 [SAR 801:800 DAR 12:5], 899 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 140 kb/s (default)
```
Now i am trying to open the same file decoding in the lavc:rawvideo codec. I want to decode because i found in raw files its easy to navigate frames back and forth smoothly using keyboard shortcuts like "." and ","
so i tried:
`mpv --vd=lavc:rawvideo "input.mp4"`
but i dont think it decoded it into rawvideo.
I looking something similar to when i open a file in avidemux, it decodes the file and opens. then the file becomes very smooth to navigate
mp4 files navigation is by key frames. not so good in single frames
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It is not "decoded into", but "decoded by", and you cannot decode an H264 file using the rawvideo decoder.
What you want is to transcode it into a format that allows seeking to frames instead.
If a little loss of quality is not a problem, try to transcode to mjpeg.
If the space on disk is not a problem, transcode to a lossless format (in the past i've seen something like Huffyuv).
Note that i didn't test the commands linked.
Last edited by kokoko3k (2017-01-11 13:48:53)
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You say rawvideo...
out.yuv will be huge.
ffmpeg -i video.mp4 -c:v rawvideo -pix_fmt yuv420p -s 400x225 out.yuv
mplayer -demuxer rawvideo -rawvideo w=400:h=225:format=i420 out.yuv
uncompressed RGB frames
ffmpeg -i video.mp4 -f rawvideo -c:v rawvideo -pix_fmt rgb565 -s 400x225 out.raw
mplayer -demuxer rawvideo -rawvideo w=400:h=225:format=i420 out.raw
Look at man ffmpeg for more.
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