Re: [linux-dvb] Deinterlacing UK DVB-T
On 22 Oct 2007, at 22:14, Mario Rossi wrote: Hi, I receive DVB-T in the UK and I'd like to improve the image quality. I think it is a deinterlacing issue. I'm currently using in mplayer vf=pp=lb And it improves the situation for the fine details. But I still get some effects, on macro blocks. There are like horizontal bands (maybe 0.5 cm thick on my 16 inches screen) and if one looks closely enough, it is possible to see the separation between those bands. I see similar things (on dvb-t) on eg five life and five us, especially movies on five us. I assume that the transmission might be in 540 horisontal pixels. Which channels do you see this on? -- Torgeir Veimo [EMAIL PROTECTED] ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Deinterlacing UK DVB-T
Måns Rullgård wrote: > Mario Rossi <[EMAIL PROTECTED]> writes: > >> Hi, >> >> I receive DVB-T in the UK and I'd like to improve the image quality. >> I think it is a deinterlacing issue. >> >> I'm currently using in mplayer >> >> vf=pp=lb >> >> And it improves the situation for the fine details. >> But I still get some effects, on macro blocks. >> There are like horizontal bands (maybe 0.5 cm thick on my 16 inches >> screen) and if one looks closely enough, it is possible to see the >> separation between those bands. > > That sounds like quantisation artifacts rather than interlacing. Some > channels in particular are using rather low bitrates so this should > come as no surprise. > Is there a way to get rid of it? If I watch my TV I can't find those lines. It's like the TV is able to smooth edges, maybe with some averaging. It happens with all applications (kaffeine, mplayer, xine) and it looks to be worse on BBC that Channel4 (& friends). ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
Re: [linux-dvb] Deinterlacing UK DVB-T
Mario Rossi <[EMAIL PROTECTED]> writes: > Hi, > > I receive DVB-T in the UK and I'd like to improve the image quality. > I think it is a deinterlacing issue. > > I'm currently using in mplayer > > vf=pp=lb > > And it improves the situation for the fine details. > But I still get some effects, on macro blocks. > There are like horizontal bands (maybe 0.5 cm thick on my 16 inches > screen) and if one looks closely enough, it is possible to see the > separation between those bands. That sounds like quantisation artifacts rather than interlacing. Some channels in particular are using rather low bitrates so this should come as no surprise. -- Måns Rullgård [EMAIL PROTECTED] ___ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
