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dude051
24th March 2006, 08:56
Recently ran into a problem that I have pin pointed to be related to anamorphic video and subtitles (of any format). Using MKVToolNix v1.6.5, I am muxing 720x480 anamorphic x264 video in the mp4 container, two OGG audio streams, and VobSub subtitles. My problem is this, when I mux subtitles of any format, VobSub, ASS, SRT, doesn't matter, my anamorphic video is no longer displayed correctly. I am getting black bars all around even though the video contains none and MPC is reporting the following:
Under Details (incorrect)
Video Size:736 x 480 (AR 871:480)

In Text Box Area (correct):
Video: MPEG4 Video (AVC) 720x480 (853:480) 29.97fps [Video]
Audio: Vorbis 48000Hz stereo [Audio]
Subtitle: SubStation Alpha [Subtitle]

I am using the CoreAVC decoder, latest Haali media splitter. I know it's an issue with the subtitles because if I take the subs out and mux, the video comes out perfect along with the audio. I just can't tell if it's MKVMerge's fault, Haali's splitter's fault or what. I've played the video in Core and MPC. VLC playes it fine, but it has all internal filters (renders its own subs too... so it might even be a DirectVobSub issue?) Any ideas appreciated.

nelson8801
29th March 2006, 16:58
The AR info is stored in the container and has to be passed through all video filters from the splitter to the player for it to work.
It is passed in VIDEOINFOHEADER2 but many VRW filter ignore it and so is lost.
In MPC, you may check where it is lost by reading the pin info of the filter.(Play->Filters->filter->Pin info)

Hope it will help you.

Koti
29th March 2006, 19:03
Check vertical padding in vobsub
http://img205.imageshack.us/img205/9697/newbitmapimage4rm.png