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JoachimS

Skipped Frames, Making Dvd Or Bd From Mpeg2 Files

Question

I was trying to put 4 DVDs on one BD for convenience, using the movie maker feature of TOAST 11.

 

I included a main menu as well.

 

Each of the movies skips every 30 sec or so (picture and sound).

 

I repaired the time code using MPEG Streamclip and used the MPEG files instead of the original DVD video folders. No difference though.

 

The original DVDs (coming from a Panasonic recorder) as well as the copied DVD files or the MPEG2 files play fine.

 

I also made a DVD from one of the MPEG2 files, same problem here.

 

 

All is set to PAL, footage is 786 x 576, AC3 48kHz, 25fps.

 

 

Any clues?

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Do you have re-encoding set to "Never" in Toast's custom encoder settings window? What you are describing is common for video-mode recordings from a set-top DVD recorder, but it should have been corrected when you had MPEG Streamclip repair the timecode breaks. What setting did you choose to save the videos after they were fixed in Streamclip? By the way, the timecode break issue doesn't appear when videos are recorded in the VR-mode. Toast is able to import VR-mode videos using the DVD setting in its Media Browser.

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Yes, all set to "never", I saved the files using "save as..." as an MPEG2 file.

 

Consider the following trouble-shooting scenario:

 

Original DVD, copy played from HD with Apple DVD Player: OK

Streamclip output file played with QuickTime Player: OK

Streamclip output file played with VLC: OK

Handbrake Output ( conversion from VIDEO_TS): OK.

 

Original DVD, copy played from HD with VLC: Dropped frames every 20sec, identical to BD playback

VTSxxx.VOB file played with VLC: Dropped frames every 20sec, identical to BD playback

 

In any case: if frames are dropped, they are always the same frames. Are non-Apple players less tolerant to specific streaming problems?

 

The fixed MPEG file should work on the BD as there are no dropped frames in QT-Player or VLC. But it does not.

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This is puzzling. Something to try is choosing "Demux > M2V & AC-3" from MPEG Streamclip. Then drag the resulting .m2v file to Toast. Toast will ask you for the matching audio file if it doesn't automatically find it. Sometimes there can be issues when Toast demuxes and multiplexes the video rather than working with files that are already demuxed.

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So I found why this happens approx. every 20sec.

 

I found that the video contains cells of 19sec to 23sec length (Used DVD2OneX for that). So it seems that TOAST and VLC lose frames at the transistion from one cell to the next.

 

Looking at one specific movie, I have 223 cells. MPEG Streamclip corrects the same amount of timecode problems.

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Very interesting. Do you think having Toast re-encode the video will work?

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