Problem remuxing m2v with IFOEdit

[cosmin]

Hi,

I have a .m2v that has the same parameters as the original stream contained in a VOB: same width, height, aspect ratio, framerate, interlacing, frame count, even GOP structure (the I/P/B frames come exactly in the same order). The only things that differ are the quantization tables, and (obviously) the quantizer scale codes.

When I try to remux the new stream with IFOEdit, the output video suffers from an occasional stuttering, approx. once in every 15-30 seconds. But when I author a DVD with this stream, it plays as smoothly as it should. This happens both on my set-top player (Panasonic), and on my software player (PowerDVD).

What am I doing wrong? I tried with and without the "Rebuild PTS" option, and "Correct VOB-Unit pointers", "Correct original IFO files". Could it be a bug in IFOEdit (ver 0.96)? What else can I try? I understood that VOBEdit does not readjusts the IFOs. Is there another tool that I can try?

Or, a related question: what does ReMPEG2 preserve, other than spatial/temporal parameters (width, ...) and GOP structure? I understood that the video streams produced by ReMPEG2 can be remuxed without problems?

Best regards

[DoubleShadowIce]

Try remuxing with VobEdit. 2COOL has this guide. Maybe it'll work for you. Start at step 11.

[cosmin]

Thanks... I tried it several times, but, unfortunately, it didn't work. In fact, when I used VOBEdit, the stuttering became even nastier. (With IFOEdit, it is only slightly noticeable).

There is something to be mentioned, though: VirtualDubMod shows lots of warnings like "Anachronistic or discontinuous timestamp found in audio stream 29 at byte position nnnnnn (may indicate an improper join)", when loading either the original VOB, or the remuxed one. The original plays fine, but the remuxed one does not.

Thanks for the help anyway. I wonder if there are other remuxing tools (TMPGEnc is good for remuxing, but not for VOBs...) I think I'll ask 2COOL about this.

Best regards

[cosmin]

Okay, problem fixed.
VOBEdit got confused by this particular stream, but the remultiplexer from ReMPEG2 handled it just fine. Otherwise, I used the rest of the steps outlined in 2COOL's guide. Thanks again for the tip!

Best regards