(You're welcome :-) But I have no clue if such tools exist in Linux,
don't think so, hence forwarding to the list)

---------- Forwarded message ----------
Date: Tue, 02 Nov 2004 15:08:49 +0100
From:
Jonas Diemer <[EMAIL PROTECTED]>
To: Gernot Ziegler <[EMAIL PROTECTED]>
Subject: Re: fix GOP size errors with mjpegtools

Hello!

Thanks for your response!

Gernot Ziegler wrote:

>What do you mean with that ? You have videos that have GOPs longer than
>15, and need to fix these videos ?
>
>
Yes that is exactly what I mean. My videos have only very few GOPs that
are too long (around 3 long GOPs per hour). Those long GOPs result from
errors in the video stream - I record from DVB-t

>The MJPEGTools are not especially capable of reconstructing broken media -
>maybe mplayer can help, outputting YUV4MPEG stream format to re-encode
>with mpeg2enc afterwards ?
>
>
Well, sure, reencoding would fix the problem, but
a) results in an image quality loss
b) needs lotsa CPU power

In theory, I only need to reencode (or fix in some other way) the
"broken" GOPs. There is a Windows tool called Womble Mpeg-vcr which has
an option to fix GOPsize errors, but I thought maybe some mjpeg tools
can do the same...

If there is a way to reencode only a part of the video (and of course,
to identify the broken GOPs), please let me know.

best regards,
Jonas Diemer



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