Ulrich schrieb: > Hi, > > > P. van Gaans wrote: >> What HDTV do you expect to enjoy exactly? BBC HD doesn't require DVB-S2, most other channels use PAFF interlacing which isn't supported > > AFAIK, most films originally produced for the big-screen are broadcasted > non-interlaced. > > At least, there were some downloadable, short recordings from films > aired on Pro-7, and I could play them in MPlayer without any problem. > > And as you said, there seems to be some progress with ffmpeg and PAFF, >>from what I've heard. Maybe I have to correct myself believing, everything would be interlaced as it was in SD land. I found the following on the net: " PAFF means "Picture Adaptive Field Frame", MBAFF means "MacroBlock Adaptive Field Frame". * PAFF allows to decide, on a frame basis, whether to encode each frame as a frame or as two fields. When encoded as two fields, it's as if you would have done a separatefields() on the frame. * MBAFF allows to decide, on a macroblock basis, whether to encode as field or frame. Actually, it works on vertical pairs of macroblocks, so on 16x32 areas. You can easily put two frame macroblocks ( on under the other ), or two field ones ( one with the top lines, the other with the bottom lines ). " So, there is still a difference between the interlaced flag being set and not being set, but if it is set, there might also be some kind of progressive frames: " Like Manao said only if the encoder does it well, it will never encode anything interlaced from a progressive source, Tandberg H.264 encoder seems to think otherwise. ... Now something about PAFF, again using bond's thread: ASTRA.HD.Demokanal.H.264.001.ts = paff progressive (1080p) mb_adaptive_frame_field_flag: 0 frame_mbs_only_flag: 0 field_pic_flag: 0 field_pic_flag: 1 <-- not found sky-hd.sample.ts = paff progressive (1080p) mb_adaptive_frame_field_flag: 0 frame_mbs_only_flag field_pic_flag: 0 field_pic_flag: 1 <-- not found In the above 2 samples all frames are encoded progressive, so the result can be called: 1080p All H.264 HD channels, except BBC-HD, all broadcast PAFF-progressive video (according to the log files created by h264_parse) " The author of this information has added: " BC-HD (MBAFF) 1440x1080 uses the Grass Valley H.264 solution: http://www.thomsongrassvalley.com/pr...oder_mpeg4_hd/ And most other H.264 (PAFF) channels, like for example Sky-HD 1920x1080, use the Tandberg H.264 solution: http://www.tandberg.net/our_story/h264.jsp LUXE HD on Eutelsat 7 east uses 1280x1080 MBAFF by Ateme, the quality is superb! I guess now there are 4 players on the H.264 Satellite market: grass valley, ViBE H.264: http://www.thomsongrassvalley.com/pr...oder_mpeg4_hd/ scientific atlanta, H.264: http://www.scientificatlanta.com/cus...ce/7006554.pdf tandberg, H.264: http://www.tandberg.net/our_story/h264.jsp ateme, H.264: http://www.ateme.com/BB_HD_4Chip.php " Maybe this information clears it up a little bit more - or even confuses more :) With kind regards Joerg Knitter _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
