[Openchrome-users] mencoder

[Thomas Hellström]

Ivor Hewitt wrote:

>On Sunday 26 February 2006 16:12, TheHog wrote:
>  
>
>>Hi,
>>
>>When I apply the latest mplayer patch to mplayer, will I be able to use h/w
>>MPEG2 decoding on a cle266 with *mencoder* ? This would be very usefull
>>since recoding a recorded video (using PVR-250 / ivtv) to divx now goes
>>with only 7 frames per second.
>>
>>    
>>
>whilst tecnically possible to access the decoded image accessing it will be 
>slow... on top of which your mpeg4 encoding is going to be taking up most of 
>your cpu.
>Keep the pvr250 output as mpeg2 and get a bigger hard disk.
>
>  
>
If we ever get to standardize an XvMC 2.0, I was thinking of adding a frame
access function that downloads the frame as an Xv picture using DMA or 
other HW
download techniques.

That would give a small speedup in situations like this, since the 
download of a previous frame can be pipelined with the decoding of the 
current frame at practically zero CPU cost.

And even if there is no big gain with this, it can always be used for 
frame-grabbing and software high quality deinterlacing and OSD blending.

/Thomas