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Benson's Avatar
Posts: 4,930 | Thanked: 2,272 times | Joined on Oct 2007
#21
Originally Posted by paulkoan View Post
avi + xvid + mp3/ac3 hits issues with b-frames or packing - I realise we can unpack, but if I need to process the videos anyway, I may as well transcode to whatever is best.
Transcoding is lossy, so if they play fine unpacked, you're better off not transcoding.

(This assumes you're keeping the original -- if you discard the original, transcoding to h.264 to save disk space could be a reasonable tradeoff...)
 
Posts: 422 | Thanked: 244 times | Joined on Feb 2008
#22
Originally Posted by Benson View Post
Transcoding is lossy, so if they play fine unpacked, you're better off not transcoding.

(This assumes you're keeping the original -- if you discard the original, transcoding to h.264 to save disk space could be a reasonable tradeoff...)
Ok yes, fair enough. As I understand it, not every codec combination is going to be well supported in the DSP, so I should have defined "optimal" really. What I want is smooth playback without errors with minimal cpu use - ie taking the best advantage of the hardware acceleration.

So I would accept some loss through transcoding if it meant lower impact on battery life for example. I read that if the content is over 800x480, then the DSP isn't used, so if I had to scale that down, I would still want to select the best combination.
 
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