problem with text-based subs in matroska

[thoralf]

Hi there,

I have a problem getting text-based subtitles to work from within matroska containers: the subs do not show up, and the video playback is somewhat jerky when the subs are supposed to be shown. I tried ssa and srt, both don't work.
If the subs are not muxed into the mkvs, everything is working fine - I therefore suppose that this is a problem with the splitter. I'm using zoom player 4.0 (same with other ds-based players), matroska splitter 1.0.2.1. and vsfilter 2.32. The mkvs were made with mkvmerge 0.8.5, audio streams are ogg, the video has been encoded with xvid.

I would like to know if other people have this problem too - from what I read in the forum, it seems like I'm the only one so far ... I would happily provide more information if they are needed to solve the issue.

w/ kind regards,
Thoralf.

[Atamido]

Render the file in GraphEdit (available in Doom9's downloads) and see what filters are being loaded.

[thoralf]

looks all fine - no unnecessary filters are being loaded:


mkv -> splitter -> (subs) --> dvobsub -> video renderer
|---> (video) -> xvid --^
----> (audio) -> corevorbis -> directsound device


hope you can make any sense out of this :-)

[edit] strangely enough, everything plays perfectly fine with the idx/sub subtitle flavour ...

with kind regards,
Thoralf.

[ChristianHJW]

Try Video Mixing Render 9 as video renderer ... simply delete the normal 'video renderer' in the graph and use 'graph' 'insert filters' to insert VMR9 from the list of 'DirectShow Filters' ....

[thoralf]

changing to vmr9 (in zoom player) did not help ... having done some more testing, I suspect that vsfilter causes the problem. the same behaviour (subs not showing up, jerky playback) occurs if I play around with the "vertical padding"-option in vsfilter ...
However, there seems to be one more issue regarding the matroska splitter: for whatever reason, direct show-based players don't get the right movie length with text-based subs. To be more specific: i have a mkv with two subtitle streams, and zoom player as well as wmp think that the movies duration is 3h 20 while it really is 1h 40mins.

with kind regards,
Thoralf.