Re: Converting MKV to AVI

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On Sat, 2010-05-08 at 15:33 -0400, sean darcy wrote:
> Patrick O'Callaghan wrote:
> > On Sat, 2010-05-08 at 12:31 -0400, sean darcy wrote:
> >> Patrick O'Callaghan wrote:
> >>> On Sat, 2010-05-08 at 10:00 -0400, sean darcy wrote:
> >>>> Patrick O'Callaghan wrote:
> >>>> [...]> 
> >>>>> <rant>
> >>>>> Part of the problem is that all the above tools are clearly aimed at
> >>>>> people who know what they're doing. Those of us uninterested in a career
> >>>>> in multimedia technology are liable to be completely lost when
> >>>>> struggling with any of the (incomplete and ambiguous) manuals, not to
> >>>>> mention the baroque syntax of the command-line options. Why are there no
> >>>>> "multimedia conversion for dummies" tools in Linux as there are in
> >>>>> Windoze?
> >>>>> </rant>
> >>>>>
> >>>>> Anyway, my question is this: does anyone have a useful recipe for this
> >>>>> kind of thing?
> >>>>>
> >>>>> And for extra credit: how about converting FLV (Flash video)?
> >>>>>
> >>>>> poc
> >>>>>
> >>>> First, I agree with your rant. What the world needs is a media recipe wiki.
> >>>>
> >>>> But I'd try again with ffmpeg. It has the most active development and 
> >>>> user group. The helpful users make up for the lousy docs.
> >>> Good to know :-)
> >>>
> >>>> 1. Do you have a very recent version of ffmpeg? I'd urge you to use svn, 
> >>>> but at least 0.5.1.
> >>> It's the standard Fedora repo version:
> >>> ffmpeg-0.5-5.20091026svn.fc12.x86_64 so possibly not.
> >>>
> >> rpmfusion has ffmpeg-0.6-0.3.20100429svn
> >>
> >>
> >>>> 2. ffmpeg -i source.mkv -vcodec copy -acodec copy output.avi , should 
> >>>> work if source mkv is in mpeg-4 and mp3.
> >>> It's H.264 and AC-3:
> >>>
> >>>   Duration: 01:32:04.57, start: 0.000000, bitrate: N/A
> >>>     Stream #0.0: Video: h264, yuv420p, 1280x720, PAR 1:1 DAR 16:9, 25 tbr, 1k tbn, 50 tbc
> >>>     Stream #0.1(eng): Audio: ac3, 48000 Hz, 2 channels, s16
> >>>
> >> Well AC-3 should work in your dvd, so try:
> >>
> >> ffmpeg -i source.mkv -vcodec mpeg2video -acodec copy output.avi
> > 
> > As soon as it starts I get:
> > [...]
> > [NULL @ 0x1570030]error, non monotone timestamps 12288 >= 12288
> > av_interleaved_write_frame(): Error while opening file
> > 
> > poc
> > 
> > 
> Ah, the dreaded non montone timestamp. See 
> https://roundup.ffmpeg.org/issue807
> 
> try:
> ffmpeg -i source.mkv -vcodec mpeg2video -acodec ac3 output.avi

Trying that now ... it'll take a while.

> Have you updated ffmpeg?

Not yet. My impression was that the .51 release was mostly about
licensing changes. I prefer to stick with the repos wherever possible.

> Let the ffmpeg user group be your friend.

It's on my list if all else fails.

Thanks for your suggestions.

poc

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