[Nottingham] mp4 playback audio slippage (loss of sync)

Martin martin at ml1.co.uk
Wed Sep 12 19:23:58 UTC 2012

On 12/09/12 19:51, Mike Martin wrote:
> 1. I would always prefer to transcode to avi any files before joining
> 2. Generally I would avoid using cat as you lose timestamps and other
> stuff, personally I would just avidemux for the joining
> 3. In avidemux if your dealing with multiple files its always a good
> idea to build vbr time map after each join (audio->build vbr time map

Thanks for that. OK...

What's the easy way to have avidemux concatenate about 30 or so mp4
files?... Or can the "Append..." option be somehow persuaded to accept
multiple files?

Or is it better to use ffmpeg or mencoder?

Thanks for the Kdenlive? Kino? LiVES? list. I may well be trying them
all at this rate :-( ...

For further experimenting afore the next talk.

I hope to be doing a RasPi / Linux demo 'mini-talk' followed by the
short round-up of the Virtuality (presented on the RasPi :-) ). Aside:
Anyone with any links into the Nottingham and NTU students to see if
they might be interested or wowed?


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