[BUG] AviSynth x86 + MPG = wrong aspect ratio and frame count (missing 88%)

[Selur]

Can't reproduce the issue here with your source:

using Vapoursynth:

• D2VSource: 185896 frames
  
• dgdecodenv.DGSource: 185896 frames
  
• LWLibavSource (with hardware decoding): 185896 frames
  

using Avisynth (32bit):

• DGSource: 185896 frames
  
• MPEG2Source: 185896 frames
  
• LWLibavVideoSource: 29827 frames
  
• D2VSource: 185896 frames
  

-> only decoder that's wrong here is LWLibavVideoSource which usually isn't used for decoding.

, I always used ffmpeg to mux to mpg, since mpg is the format DVD uses.

a. ffmpeg isn't really meant to handle dvd input
b. if really want to use ffmpeg to concatenate vob files you need to tell ffmpeg to recalculate the time codes otherwise the output will be 'broken'
better use:
- mencoder to remux to mpg since it can handle DVD input
- mkvtoolnix or MakeMKV if you want to remux .vob files to mkv
- PGCDemux to demux to raw streams, this is probably the 'best' way since it is the best in handling pgcs.

Frame count is handled correctly by Hybrid version 2020.11.25.1.

like I wrote before, works fine here,... (since MPEG2Source hasn't be updated for ages and works fine here: no clue whats happening on your end)

Is muxing DVD VOB's to MKV the preferred way to handle DVD?

Depends on what you want to do. The best way is probably using PGCDemux if your source has multiple pcs, otherwise mkvtoolnix or MakeMKV are probably the best way.


Cu Selur