[FFmpeg-user] task/job offer
jonathan.viney at gmail.com
Sat Aug 1 07:47:16 CEST 2015
On Sat, Aug 1, 2015 at 2:24 AM, vedran <valajbeg at gmail.com> wrote:
> few days ago i tried to get somebody to prepare some ffmpeg commands for me
> with detail requirements what i need. Unfortunately other than few
> comments, nobody appeared.
> I'm prepared to pay 100$ for following, if you think it is not enough, say
> and explain why. If the task is completed properly, we could have
> continuous contract
> If you are not interested to work or help, don't mess the thread.
> 1. I would give you about 30 videos as a sample for input, various formats,
> usually from mobile phones and home cameras
> 2. I need JUST command/s which would:
> - Reduce resolution if the source video is greater than 1024px width.
> - Keep the format proportional
The above filter already does this.
> - Keep proper audio quality of any source video
Not sure what you mean. If you don't want to re-encode the audio you
can copy the stream.
> - Preserve as good as possible quality/bitrate ratio of the video.
> - Video to be playable in html5 player (videojs) on iphone 3 and above (so
> that the bitrate is not more than iphone can play or that it is not higher
> resolution than iphone can handle)
-vcodec libx264 -profile:v baseline -pix_fmt yuv420p
I don't know what the maximum bitrates for the iPhone 3 are. But you
can specify maximum and minimum bitrates as described here:
> - have two outputs, one with flv and another with mp4 (no ogg or any other
At the end of the filter chain you can use the split filter to create
-filter_complex "scale=min(iw\,1024):-2,split=2[one][two]" -map
"[one]" one.flv -map "[two]" two.flv
For each output you can specify the encoding options after the -map
option. Eg -vcodec libx264 -profile:v baseline etc ...
Hopefully that helps.
> Environment is Debian squeeze with packages from multimedia repository. If
> recompiling is needed, i would appreciate just basic guidelines. Nobody
> needs to do that for me.
> I don't need any script, batch file or so, just simple commands.
> And that is about it.
> IF ANY additional codecs or something else needs to installed, everything
> is possible.
> Please just contact me.
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
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