Best way to reencode H.264? (MPEG-4 AVC Main 3.0 --to--> Baseline 3.0)
 

I would like to convert some videos for travelling and to view them with the N900 default video player. Mplayer and VLC support the main profile and play those videos, but they are not optimized for mobile usage, and battery drains faster.

The files I'm after are the 28c3 recordings which can be downloaded at http://mirror.fem-net.de/CCC/28C3/mp4-h264-LQ/.

They are encoded in H264 Main 3.0 Profile, according to this wiki page the n900 only supports Baseline 3.0 encoded stuff.
http://i.imgur.com/ibKxb.png


I don't have much experience with reencoding/conversation, just used virtualdub in the past and installed avidemux.
Can anybody give me some tips what would be the fastest/best way to reencode a bunch of H.264 Main Videos to Baseline 3.0? Any suggestions on software for linux or windows? Is it possible to use a HD5850 for conversion?

Thanks,
Conrad


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Edit: Found a N900-preset for avidemux on the wiki, will go with it for some tests.

Update: File gets bigger after reencode, from 80 Mb to 104 Mb and now shows Baseline 2.1.
http://i.imgur.com/2W80y.jpg

Would be nice to get Baseline 3.0, maybe the compression is better.
Hints are welcome :)


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update: Changed bitrate to 281 Kbps, file is now 81 Mb.
http://i.imgur.com/XB43G.jpg

Re: Best way to reencode H.264? (MPEG-4 AVC Main 3.0 --to--> Baseline 3.0)
 

If you want a detailed article about video encoding and playback on the N900 I strongly suggest going to this link:

http://wiki.maemo.org/Video_encoding#Encoding_Software

There's even an optimized preset for the N900 for different video converters. I personally use Handbrake (download link also on the link I provided) and it works like a charm.

Good luck and regards.

Re: Best way to reencode H.264? (MPEG-4 AVC Main 3.0 --to--> Baseline 3.0)
 

Do you want something that will convert on device, or via a pc?

The line you might expect to work, when trying to convert, doesnt...
Knowing an effective command to re-encode video mdeia which is already in H264 format, so doesn't need converting, would be really handy. If specifying the codec is required to change profiles, what is the ffmpeg name on the N900 for the libav vcodec and acodec?

Oh, another reason the above might not work is that the -vpre preset seems to require the full file path. I read somewhere the order and combinations of presets can also make a difference. Dodn't know though.

Re: Best way to reencode H.264? (MPEG-4 AVC Main 3.0 --to--> Baseline 3.0)
 

use cyko with handbrakeCLI and covert them

Re: Best way to reencode H.264? (MPEG-4 AVC Main 3.0 --to--> Baseline 3.0)
 

I often use the Handbrake (free) to convert my videos and DVDs to MP4 on Mac for my N900.

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