iPod h264 file problems

About encoding, codec settings, muxers and filter usage
operator
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iPod h264 file problems

Postby operator » 14 Apr 2007 07:24

I am attempting to batch convert video into h.264 for my iPod, and it seems to work at first, the videos play on my computer, etc.
I use GtkPod to copy them to my iPod without problems, but when i try to play the videos, it tries to play them, goes black, then returns to the menu.
I have made sure that the resolution is low enough, since i first tried 640x480 (i have an 80gb 5.5g iPod, so it should support that high of a resolution), then 320x240, along with the widescreen permutations of both.
here is the basic command line that my batch script uses:

Code: Select all

vlc --sout-all "$A" :sout="#transcode{vcodec=h264,vb=380,scale=0.5,acodec=mp4a,ab=64,channels=2,soverlay}:duplicate{dst=std{access=file,mux=mp4,dst="~/converted/$A.mp4"}" vlc:quit -I dummy

Teta
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VLC version: 0.8.6c
Operating System: Windows

Postby Teta » 18 May 2007 10:36

That doesn't work for me either... I use the mp4v codec (and the rest of the settings the same) and that seems to work fine for the video part. Every file does have an audio problem though (stops after 13'19"). Still figuring that one out.

Teta

operator
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Postby operator » 18 May 2007 20:50

Update:
okay, i currently don't have my iPod, so i can't test it, but i seem to have fixed some problems.
mp4v:
1) broken sound can be fixed by reducing system load during the encode
2)broken video can be fixed (some files that don't encode right) my forcing the framerate to 30fps
h264:
haven't had a chance to try it, but a forced frame rate may fix this as well
-=-=-=-=-=-
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Teta
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VLC version: 0.8.6c
Operating System: Windows

Postby Teta » 19 May 2007 10:51

mp4v:
1) broken sound can be fixed by reducing system load during the encode
My system doesn't even notice VLC is transcoding... System load has nothing to do with it. It is very remarkable though that it's always at exactly the same time: 13'19".

I'm using Videora now and that works perfectly, although it's a lot slower... Still would like to have VLC do it.

Teta

DJ
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Postby DJ » 20 May 2007 07:52

Try the doom9 forums for the settings under x264 to make compatible QuickTime files. The problem is that QuickTime is at base line for h.264 and very few people want to use this. Or perhaps better yet complain to Apple Computer.


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