2009/1/19 Stas Oskin <[email protected]>: > Oh, also, increasing the GOP size to 10*frame rate may help. You can >> also try increasing the diamond size and there are some other flags... >> +aic+cbp+mv0+mv4. And the +trell flag has migrated to using the >> -trellis <0,1,2> option. I suspect any value >0 will enable it for >> mpeg4. > > About that, I tried to increase it to FPS * 10, and while the quality > doesn't seem to get improved, I did got a side effect in form of a lot > pixelation on every seek I make in the video player. I mean, previously when > I did seeking on the video (via VLC for example), the pixelation was cleared > very quickly. > > Now, it takes up to 10 seconds to get cleared back to normal image. > > Can anyone advice on the matter?
That's because the player hasn't decoded the all the reference frames for that frame to which you're trying to seek. It probably doesn't fix itself until it gets to the next I-frame. Having a larger GOP size should improve compression significantly in MPEG-4 Part 2. P-/B-frames are much smaller than I-frames and having larger GOPs means less I-frames at the cost of seekability and error resilience. It's your choice. Regards, Rob _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
