[Libav-user] This command take 2 minutes to render. Can it be quicker?

[Vijay Kanta]

Hey guys,

I found out it's the H264 encoding that is really screwing up the cpu
cycles, and not the audio. @carl, moving it down didn't help, it still says
invalid command.

I found out that h264 encoding takes up 20 minutes with music and srt
combined for a 2 min random video clip.


On Sat, May 31, 2014 at 1:24 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Vijay Kanta <viju.kantah at ...> writes:
>
> > ffmpeg -i music/qT0pdDhKxFDnfJHq2.mp3 -c:a copy
> > -i video/HKp1ZpHbANT4dmGRC.mp4 -vcodec libx264
> > -crf 23 -vf subtitles=subtitles/1718379803.srt
> > -preset ultrafast -strict -2
> > film/HKp1ZpHbANT4dmGRC.mp4
>
> Move "-c:a copy" behind the last input file.
>
> But please note that compared to H264 encoding,
> audio encoding should always be fast, so the
> speed difference between audio copying and
> audio reencoding should be less than using
> different x264 presets.
>
> Carl Eugen
>
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