help with batman converter

100kev

well whenever I try to convert an mp4 video with batman, there is an error `skipping frame` can someone help me please? ty

100kev

actualy it saids error after skipping frame but only　④　１ particular video

BobbyQ

Why don't you use the BatMan thread ? BatMan - einfache Stapelverarbeitung für MEncoder
Other than that, "skipping frame" is not an error message but a warning from mencoder. It happens everytime you are converting a source with >20 fps to the Meizu format.
Important is only if the resulting video is good or not.

__________________

Lolita

BTW better frame rate downscaling methods don't skip frames ... but using it is much slower.

BobbyQ

hm, I don't think I have fully understood the difference between "downscaling" and "skipping" when it comes to convert a 25 fps movie to 20 fps. Whatever you do, you lose 5 frames within a given second.
What are the commands for downscaling with mencoder ?

Lolita

Well there is no way you can do it directly in mencoder, only way to do it in mencoder is to use avisynth frameserver as input for mencoder. But in this case on windouws i would use vdub commandline interface for encoding, bacause it have much better results on playable videos on m6.

BobbyQ

but .. what's the difference between "downscaling" and "skipping" ? you lose frames.

Lolita

Yes but skipping just drop them, and when you downscale/convert etc. image of each frame is calculated from previous and next frames (like on 100fps TV).

BobbyQ

still don't get it .. imagine the following scene. A ball rolls from left to right.
original movie (25 fps):
frame 01 : ball is at position 1 cm
frame 02 : ball is at position 2 cm
..
frame 25 : ball is at position 25 cm

now we want to convert to 20 fps.
skipping would just delete 5 frames by rounding down to integers (mod 20).
what do you expect "downscaling" to do here ? recalculate ball positions to e.g. 1.5 cm ? I doubt that somehow, since that is very complicated.

__________________

joelong

In you example, under the skipping scheme, frame 4, for example, of the original 25 frames is simply eliminated. So, in the resulting 20-frame clip, the ball leaps forward (jerkily) from the 3 cm position to the 5 cm position.

In contrast, in the downscaling scheme, the conversion software interpolates 25 steps into 20 somewhat bigger steps, resulting in a visibly smoother conversion.