Re: Re: h.264 splitting & merging (Chris)

Good Morning!

For the splitting I found out, that avisplit works only at keyframes. My Codec produces keyframes every 30 secs, so that won't be the right solution. My plan now is: Conversion to another format with many keyframes, for getting splitting accurancy, afterwards splitting, merging and conversion in a well handable format.

Can you explain the fps-conversion a little more in detail? I tried various commands like
transcode -i input.avi -o output out.avi --export_fps 5.0 -x mplayer -J modfps=clonetype=0 -y xvid,null
but it won't work.

Maybe my development enviroment isn't setup properly, I use Ubuntu 8.10. I tried to install again and again with different howtos, but there where always problems with anything missing. Now I made a fresh install with the package installer and it seems to work well. Is there a good and up-to-date install tutorial anywhere? Only "Download!, Compile!" is a little too less for me... Especially the ffmpeg-options are explained always different.

Thanking you in anticipation,
Chris


----- Original Message -----
From: [email protected]
To: [email protected]
Date: 17.02.2009 16:37:56
Subject: [transcode-users] Re: h.264 splitting & merging (Chris)


> You should take a look at the distributed transcoding possibility of 
> transcode which can be found on the wiki. In the preprocess phase you 
> can virtually split you video.
> 
> Kind regards
> 
> Jens Buysse
> 
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> >    1. h.264 splitting & merging (Chris)
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> > Message: 1
> > Date: Tue, 17 Feb 2009 11:20:55 +0100 (CET)
> > From: "Chris"
> > Subject: [transcode-users] h.264 splitting & merging
> > To: [email protected]
> > Message-ID: 
> > Content-Type: text/plain; charset="iso-8859-15"
> >
> > Hi Transcode-Users!
> >
> > I'm very new to transcode. I want to develop an app which splits parts out of multiple video files an merges them afterwards to one movie. The movie files are encodes with a special h.264-codec which is optimized for security-cameras. Each file contains 1 minute of video at 5 fps = 300 frames. I did some experiments with avisplit, but the accurancy was not very good, I think this is due to the strange codec. Avimerge worked fine.
> >
> > My questions:
> > -Is it overall the right approach to handle this use-case?
> > -How can I get a better accurancy in splitting my video? Maybe converting in another format before splitting?
> > -How can I convert my 5 fps-movie to 25 fps? I tried fpsmod, but transcode never stopped running?!
> >
> > Thank you for your help!
> > Chris
> >
> >
> >
> >
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