23.976 fps to 25 fps (pal)

[carrspaints]

I have waited my hour and searched this site for an answer to this question. There appears to be no definitive answer.

Using TMPGe, how do you convert an avi file from 23.976 frames per second, to PAL 25 frames per second. If I just use the NTSC 23,976 template, Nero WILL NOT BURN IT!! If I use the Pal template, It jerks due to the frame rate difference between source and mpg file output. Please help.

[Yeshi]

it can be done with a couple of mouse clicks. load your AVI file, load the unlock template, then click SETTING, and click FRAME RATE and select 25fps. whoa...

[Yeshi]

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If I use the Pal template, It jerks due to the frame rate difference between source and mpg file output. Please help.
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Thats the way it is. Do you know why. Because to go from 23.97 to 25FPS the encoder needs to insert 1 extra frame every second. So it uses the last frame and repeats it, so that every one second, you will get a still frame.

[vitualis]

As what Yeshi said. Just using the PAL template on TMPGEnc (or any other encoder) will probably yield poor results (regular skipping).

If you still have the AVI file, you can do this. Load up the AVI file in VirtualDub and change the framerate of the video clip to 25 fps (i.e., you are speeding up the clip by about 4%). Then save the video component (direct streaming).

Save the audio component to a wav file. Virtualdub won't change the length of the audio, so you will have to alter it yourself with an audio editor (e.g., Cool Edit 2000). The best way to change it is to get the number of frames of your video clip and then times it by 0.04 seconds (each frame = 0.04s in 25 fps PAL). Then change your audio to this length.

Now, encode your video and audio using TMPGEnc using the PAL template. Most people won't notice the 4% speed up in PAL (and indeed, this is how most movie studios make PAL versions of their movies).

Regards.

[ipf123]

I have been using vdub / cooledit way of conversion as suggested by Michael. My experience is this method have a big issue of video / audio out of sync. Not to mention the extra time it takes. I have given up and gone back just using tmpgenc or frameserving to cce. Most of the time the jerkiness is not noticeable anyway.

[miko]

The only time you don't see the "jerkiness" is when two people have a quiet conversation. As soon as you have motion in your video it's obvious. As for synch problem after converting both audio and video you have to go back to virtualdub and alter audio preeload so that audio/video synchs. I've done this on several occations and it's usually just fractions of a second that will do the trick. Check both in the beginning and end of the movie to be sure...

[snowmoon]

AVIsynth anyone...

SegmentedAVISource("mycap.avi")
AssumeFPS(25,sync_audio=true)
bicibicresize(....

It can all be done inline by avisynth 1.0 or higher.