[vdr] FF card A/V sync suggestion

[Udo Richter]

whoMAN wrote:
> mplayer uses either LAVC or FAME [depending on how mplayer was 
> compiled/configured] to convert EVERYTHING to MPEG1 before it is sent to 
> the DVB Device.  In essence, it transcodes in realtime.
> 
> Not too efficient, but since transcoding to MPEG 1 takes little 
> resources, most people probably don't notice.

Once again, this is impossible. Really.

My CPU is a VIA C3-600 CPU, and its really too slow to transcode 
*anything*. If I force transcodung with -vf lavc=1000, the CPU load is 
99% and the video plays at 40% original speed only. Just decoding the 
mpeg2 stream eats up 75% CPU alone, without audio and without displaying.

Without forcing transcoding, the CPU load is 10% and no frames get 
dropped. This is roughly 25 times faster than with lavc=1000.

Cheers,

Udo