[FFmpeg-user] Troubleshooting cat'ing mpeg videos

[Brian Cardarella]

Yes! transcoding the file did the trick. Thank-you! The quality really
did not suffer so this is perfect. :)

- Brian

On Wed, Jul 20, 2011 at 4:48 PM, Lu, James - 0442 - MITLL
<james.lu at ll.mit.edu> wrote:
> Hey Brian, I'm no expert on ffmpeg but I recall reading somewhere that cat messes up timestamps, and a reencode will degrade video quality but will fix the timestamps. Hope that helps.
>
> ~James
>
> -----Original Message-----
> From: ffmpeg-user-bounces at ffmpeg.org [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of Brian Cardarella
> Sent: Wednesday, July 20, 2011 4:25 PM
> To: FFmpeg user questions and RTFMs
> Subject: [FFmpeg-user] Troubleshooting cat'ing mpeg videos
>
> I have two mpg videos that I've transcoded from mp4s. Each are 10
> seconds long. When I play the transcoded mpg files individually they
> run through just fine. But when I cat them into a combined mpg the
> first one plays and when I get to the 10 second mark the 2nd one plays
> for about 2 seconds, wish playback that seems to be skipping frames
> and the audio is off. Then the video ends.
>
> The combined playing time should be 20 seconds as each file
> individually is 10 seconds. But the combined file only plays for 13
> seconds.
>
> If it is of any help I have pastied the output from the transocdings
> and an ffprobe of the combined mpg:
>
> http://pastie.org/2244749
>
> Any help is greatly appreciated! :)
>
> - Brian
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