30.014 fps --> 25 fps...how?

[twistee]

Hi,

I have a 30.014 fps avi (i dont know why the person encoded it to that), but I want to encode it to 25 fps for VCD. I can do the video pretty easily, but if i try and make the audio 25fps it just makes the sound really fast and high pitched (using besweet). How do i convert the audio using a program that will just make it normal?

[DSPguru]

mux BeSweet's 25fps output with 25fps video and burn the vcd.
the speed will be okay!

[twistee]

oh ok. once i heard the output i just deleted it, i never tried putting it together. thanks.

[twistee]

Hi again,

I think i might be doing the framerate wrong. In besweet do i just type 30014 (in the change framerate box) and 25000. When I put them both together the sound still went really fast. When i used TMPGenc the video took the normal amount of time. When using virtual dub the video went for longer (as it just changed the framerate). When i went in to the frame setting in vdub it had an option to match the framerate and it suggested 36 fps (or something close to that)...help?

[ProfDrMorph]

If you're using TMPGEnc to change the FPS of your video stream you don't have to care to for audio at all. Just leave it unchanged it'll work.

[twistee]

Yeah, TMPGenc works with every other file i have. But this file is just not syncing. Its 30.14 fps and when I put it in the file slowly gets more and more out of synch...its really wierd. Is there any way you can do a screen capture of avi's? I do screen captures with rm files (since real player your able to capture)...

[ProfDrMorph]

HyperCam can do this.

Have you tried decompressing the audio to an external file ( maybe .wav ) without changing it and then convert the video to 25 FPS without adding audio in this step and then later add the audio after TMPGEnc has reencoded the video stream?

[twistee]

yeah i have tried heaps of methods. When I encode the video to 25 fps it is the same length as the unchanged wav file, but when i put them together (after converting the wav to mp2) they dont synch. If I try and change the wav to 25 fps then the sound goes really fast and is really short. I think I might just have to capture from media player (I will lose heaps of quality but at least the sound will be in synch).

I use snagit to capture rm files, would that work? Since i have tried before with avi's and it only captures a black screen (since i think it uses hardware to show it or something like that)...is there a player that makes the software play it?

[ProfDrMorph]

somewhere in your Windowssettings ( since I'm using german Win2k Pro and can't tell you exactly where ;) ) you can disable graphic acceleration. This should fix your problem with only capturing black AVIs.

Is the audio and video randomly out of synch ( sometimes a bit more sometimes a bit less ) or not?

[twistee]

When im watching the avi file everything is in synch. But when i convert it to anything the sound progressively gets out of synch. Ill try and find that graphic switch later. thanks.