[Libav-user] partial decoding of mp4 files
Carl Eugen Hoyos
ceffmpeg at gmail.com
Wed May 17 14:54:32 EEST 2017
2017-05-17 13:32 GMT+02:00 Sam Halliday <sam.halliday at gmail.com>:
> Is there a way to get hold of low level information, i.e. partial
> decodings, of an mp4 file? Since this is all I need for my analysis, I
> hope it would be more efficient than decoding the entire video:
> 1. key frames (skipping motion compensation frames) as
> decoded images
See the -skip_frame option.
I believe motion vectors are produced as part of decoding and that
cannot be optimized easily.
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