Convert DivX file with subs

[marioval]

I have a .divx with internal selectable subs that I want to reencode to a smaller size and retain the subs. Is this possible?

[marioval]

Bump. Anyone?

[ricardouk]

i'm not aware of any .divx demuxer, what i can suggest is:

if the divx file is MPEG4 ASP, rename the file extension to avi, find an srt sub for it on the web ( i think its against the rules to post links here to those sites) and use your favourite converter to convert the avi+srt or use a avisynth script

DirectShowSource("video.avi")
Lanczos4Resize(480, 272)
Textsub("subtitle.srt")

and open the avs script with your favourite converter

but you'll loose quality by reconverting

[rickydavao]

Yes, it is possible. Re-encode the video of the original DivX file (and the audio if you wish) to a smaller size using your favourite converter (ie. AVIRecomp). Then use DivXMuxGUI to remux your new files into a new DivX video. DivXMuxGUI allows you to individually select each of the components of your DivX file: video, audio, and subtitles. If all you did was to re-encode the video, for example, select the new video file (.avi) as your video source, then select your ORIGINAL DivX file for both the audio and subtitle files ... DivXMuxGUI will automatically extract the audio and subtitle streams from your original DivX file and mux them with your newly compressed video file to create a new DivX file for you.

[marioval]

Excellent advice rickydavao. I'll try that. Thanks

[marioval]

Yes, it is possible. Re-encode the video of the original DivX file (and the audio if you wish) to a smaller size using your favourite converter (ie. AVIRecomp). Then use DivXMuxGUI to remux your new files into a new DivX video. DivXMuxGUI allows you to individually select each of the components of your DivX file: video, audio, and subtitles. If all you did was to re-encode the video, for example, select the new video file (.avi) as your video source, then select your ORIGINAL DivX file for both the audio and subtitle files ... DivXMuxGUI will automatically extract the audio and subtitle streams from your original DivX file and mux them with your newly compressed video file to create a new DivX file for you.

I tried this. DivxMuxGui fails immediately with status "Failed:Invalid"

[rickydavao]

Make sure that you have followed all of the directions on DivXMux GUI homepage here: http://www.kamiwa.de/node/4
Especially that you have Microsoft .NET Framework 1.1 installed, and also have DivXMux.exe from the DivX SDK (download links for both are included on that site).

Only other possibility that I can think of is that one (or more) of either your video, audio or subtitle files don't follow the DivX specification. The video must be encoded following the DivX Home Theater profile, or DivXMux won't mux it (usually). That is, among other things, 1 b-frame, no qpel, no gmc, packed bitstream and H.263 for the quantization matrix.

To test if it's your video stream, run DivXMuxGUI and add only your newly encoded video file - no audio or subtitle - and proceed directly to your job queue. Start the job and, if you still get the error, there's an incompatibility with your video file.

If it works, try it with both video and audio only. Again, if it fails now, the audio should be at fault.

Finally, if it muxes OK with both video and audio, now try all three - video, audio and subtitles. If it fails now, subtitles are at fault.

If you can determine which of the three - audio, video or subtitles - is causing the error, then we can work on figuring out exactly what the incompatibility might be. Let me know how you progress, and we can keep working on it from here.