[vlc-devel] can vlc-1.2.0 add feature of cutting video

[Kaarlo Räihä]

2012/1/13 zhu shi song <zhushisongzhu at yahoo.com>

> > > Cutting should work without transcoding, just leave transcode part out
> >> and
> >> have muxer and output file selected. Naturally it won't be frame
> accurate.
> >> I use one MP4(H.264+AAC) video(total length is 36s) to test it using vlc
> >> 1.2.0-pre4.
> >> Choose 'convert/save',then choose 'show more options' adding
> >> ':start-time=5.0 :stop-time=15.0'. In
> >>'Profile edit' keep video track and audio track, VLC got the destination
> > >video file quickly,obviously it didn't transcode.  But the destination
> > >video is corrupted.  When playing the output,  it had some masaic and a
> > >little been frozen. Additionally, the length of output video is 30s and
> not
> > >correct, it should be 10s.
> > >It seems that VLC don't work for cutting  mp4 video without transcoding.
> >>
>
> >Does the red recording button output working file?
> Yes, recording works correctly.  But recording need re-encoding.  I hope
> to cut mp4 video without re-encoding  because the source and the
> destination video has the same muxer(mp4) and codecs(H.264+AAC).  I don't
> need transcoding, I just want to cut one part of the video shortly.
>

Recording button doesn't do transcoding. It does as-is copying. Or at least
mine 1.2.0 does (stream_out_record debug: Using record output
`std{access=file,mux='mp4',dst='C:\Users\x\Videos\vlc-record-2012-01-13-20h00m20s-video.mp4-.mp4'}').



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