retiming subs

[Lev]

is it possible to retime the subs of a svcd?
i got a svcd with subs that have a delay of about 0.5 sec..

[poopity poop]

Yes
1. de-multiplex the mpg into its video and audio counterparts. Use tmpeg's mpg tools in the file menu.
2 Take your .mpa or .mp2 whichever was created (this is the audio) and drop it into sound forge. This will make a temporary .wav file from the mp2 file.
3. Load your .mpv into DVD2avi->make a .d2v file->make a VFAPI .avi, and load it into nandub.
You now have a visual frame by frame picture of the video, and the audo which you can get down to the millisecond. Simply follow an a/v syncing guide or do this:
4. Find a door slam or a gun shot or some pop where you can exactly identify the sound, find at least 3 of these to be sure. Then find them in the audio, find how much they are apart in each of the three thigns you found, then average them together, then offset the audio by that much by adding silence or deleteing some of the begginging.

5. Look at your mp2 bitrate in the demultiplexor and remember that. Save your .wav->encode into an .mp2 using toolame, ot tmpeg using hte bitrate that the orignal was, then multiplex your new audio with the .mpv file
6. BAMN!! you done!

[Pko]

Originally posted by Lev
is it possible to retime the subs of a svcd?
i got a svcd with subs that have a delay of about 0.5 sec..

You need

1) demux audio and video and then remux them again; so you will have a stream with no subtitles

2) extract the subtitles from the original stream. I think that the "vobsub" utility that comes with submux can do that...

3) remux the subtitles with submux with the stream created in step 1. You should try with different delays until you are satisfied, a player with CD-RW capability is a must for this :-)

[poopity poop]

opps my bad, my post was about how to retime the audio... sorry

[Philoliv]

I have the same problem.. but my SVCD was with 2 audio streams and 2 subtitles (french/english).. so some questions :


How to mux with two subtitles (I used submux GUI but the result gives me a svcd with just one subtitles stream) ? what is the problem ?

Is there the possibility to use the subtitles streams extracted by DVD2SVCD (.bmp and .sub) for retiming .sub with an advance of 0.5 sec ? (and what to use for doing it ?)

I had another idea to make what i wanted i.e., i tried to cut the beginning of video and audio streams (just .5 sec) and I used bbmpeg to remux but how to cut mp3 audio streams ? (tmpeg for video)

Thanks in advance for your answers..