OGM Muxing Troubles

[cynoshire]

OK, so I was just about to make a 1 CD AVI-AC3 backup of a movie when I thought to myself "hey, I wonder what ogm is like" so I fired up vdubmod to find out. I loaded the .avi I had already encoded using Xvid, then I selected a 2.0 AC3 audio file and a .srt subtitle file for the inputs.

I had vdubmod mux them together, then I played the .ogm file. Everything worked fine except that the video stutters horribly. You can notice it when the camera pans; about every second the video will stutter. This is not present in the original .avi video file.

I thought maybe there was some problems with using AC3, so I converted it into .ogg audio, but the same thing happened. I tried loading the .avs, then using the .ogg audio and .srt subtitles and encoding the video using Xvid - same problem, video still stutters.

So I downloaded OggMux-0.9.4.2 and used that. BINGO, problem solved, video looks great, no stutering. Only thing is, OggMux doesn't like the .srt subtitle file, which worked fine in Vdubmod. It gives me a "File Render Error" with "Can't render input file C:\...\sub.srt" as the description.

So, finally, my questions:

1. Am I doing something wrong in vdubmod to cause this stuttering? Is this a common problem?

2. Why does oggmux not accept the subtitles, but vdubmod does?

3. Are there any other ogm muxing programs that work better/as well as these two?

[bond]

i guess there is something wrong with the .srt file?

[entropy]

Only thing is, OggMux doesn't like the .srt subtitle file, which worked fine in Vdubmod. It gives me a "File Render Error" with "Can't render input file C:\...\sub.srt" as the description.

2. Why does oggmux not accept the subtitles, but vdubmod does?

To answer this question, you need to install SubTitDS1400! You can download this program from: http://tobias.everwicked.com/subtit.htm! I had this same problem, but this cleared it up. Also, if you havn't installed it already, install OggDS0995which you can download here: http://tobias.everwicked.com/ ;) , wish you luck.

[entropy]

3. Are there any other ogm muxing programs that work better/as well as these two? [/B]

Forgot to mention, you may want to try using GraphEdit build 011008. It accomplishes the same thing, but is a little more involved than OggMux. You can download it here: http://www.digital-digest.com/dvd/downloads/graphedit.html

[Koepi]

OggMux was coded just because graphedit is a bit complicated to set up ;) also, features like chapters etc. are very evil to enter that way ;)

It uses the same "graph building routines", so using graphedit instead of oggmux doesn't solve any problems.

EDIT: btw., in the "releasenotes.txt" - which you read of course - there's a line embedded in exclamation marks. Guess what it states... *eg*

Regards
Koepi

[cynoshire]

OK, I installed SubTitDS1400 and that fixed the Oggmux subtitle problem, works great.

I found out what the Vdubmod stuttering problem is caused by. The video plays smooth if I don't mux the subtitles. But when I make a rip with subtitles the video stutters horribly.

Should I post this problem in the vdubmod fourm or has there already been a thread about this?

Oh, and is there any chance that oggmux will support .ac3 files in the future?

[Mr.Radar]

It does support AC3. You just need to convert the AC3 to an AC3-WAV(with BeSweet) and then set the encoding quality to 0 so it doesn't try to re-encode the AC3-WAV to Ogg.

[cynoshire]

Yeah, I know, I was just wondering if you would be able to just mux the original AC3, to save a step in the process. Because I noticed that Vdubmod can do that, but oggmux doesn't.

[cynoshire]

About that stuttering video...

When I mux a .ogm with 2 audio streams, now with oggmux, the video playback stutters. Except... if, during playback, I switch to the second audio stream the video looks smooth. I can then switch back to the first audio stream and the video looks smooth.

Anyone else have this problem? I don't know why it's choppy until I change audio streams. After that I can select any stream and it's smooth.

[Koepi]

Did you try the search? This gets annoying now as you're asking those questions which are answered 100 times here.

Last warning before taking action (=strike for not using the search).

Uncheck "Enable all streams" in the OGG DSF configuration.

Koepi