SERIOUS Mpeg problems

[kyleinct]

I am STUMPED!! For about 6 months, I have been running into certain mpeg files that (hard to explain) start playing normally, but end after only 2 or 3 minutes, instead of, say, the entire 30. However, if you jump to the middle of the movie using the toolbar, you'll get the middle of the movie (sometimes), or it will just kind of freeze up.

Re-encoding them with virtually every program that I can find has yielded many different results. Sometimes I get the whole 30 minutes of audio, but the video gets stuck on one frame for 10 minutes at a time. Sometimes (most of the time) it just encodes the first 2 or 3 minutes of the file and thinks that it's finished.

Does anyone recognize this problem, or better yet, have a solution?

I'd appreciate any assistance.

Thanks,

Kyle

[davemcg37]

try running the clip through virtualdub and searching for bad frames

[tenders]

you need to do more reading/research. it could be bad frames,but i would'nt count on it.

[kyleinct]

Interesting, Davemc, there were no bad frames but there were lots of messages for "anachronistic or discontiuous timestamps" found in video stream 0 at lots of positions in the clip. It said it may indicate an improper join.

I didn't join these files. Any idea how to fix them?

[dlb]

I am not a expert but you could try vcd gear. Do mpeg to mpeg and check fix mpeg errors.

dlb.

[bugster]

You could try de-multiplexing and re-multiplexing using TmpGenc's mpeg-tools. This sometimes fixes this kind of problem.

[FOO]

Womble MPEG2VCR has a utility to fix timestamps in a MPEG

Another way if you have the time is to frameserve it to
TMPGenc with Vdub and re-encode. In this case TMPGenc is receiving
only uncompressed raw video and none of the MPEG2
stream errors will pass through.

This assumes that it plays OK in Vdub.