In article <[email protected]>, Owen Smith <[email protected]> wrote: > Yes, 1280 x 720 is normal for iPlayer "HD" and they only include stereo > sound even if the original broadcast had 5.1 sound. BBC channels > broadcast in HD over DVB-T2 look much better, and sometimes have 5.1 > sound which I use.
OK, thanks. Confirms my suspicion that DVB-T2 is better if you can conveniently get it! cf below wrt some snags... > I play all this stuff on my TV, get_iplayer downloads play fine on my > Humax HDR Fox T2 PVR. I find watching on a PC a poorer experience for > either iPlayer HD downloads or DVB-T2 broadcasts (I can extract them > from my PVR). FWIW I use the same HDTV set for viewing DVB-T/T2 and with a Linux box to listen/view files or streams. VLC seems to me to do a good job, but I did have to tell it to use avconv/avcodec to avoid DVB-T2 recordings of some items having sound levels that jumped about due to 'drc' issues. I'm particularly interested in the audio, so plan to gip some suitable item in future for comparision with DVB-T2. Its interesting that the iplayer files are stereo-only for the following reasons. It seems common with DVB-T2 for the audio to switch 2 <-> 5.1. 'on the fly. As a result when I record the streams the resulting file has such changes at the relevant times in the file. VLC (using faad or avcodec) 'misses' these changes. The result is that sound output falls silent. I can regain it by re-selecting audio, and when 5.1. it is downmixed to stereo as I require OK. I guess that the VLC/etc developers took for granted a that a file wouldn't ever have a change of format mid-file. So just assume that the format at the start will define what is used thoughout the file. Alas, that's not the case for 'raw' recordings I make from DVB-T2. :-/ This has been raised so I'm hoping it will get fixed sometime. MY HDTV does have a 'media player' that doesn't lose the audio at 2 <-> 5.1. changes, but in other ways it is poor compared to VLC. Jim -- Electronics http://www.st-and.ac.uk/~www_pa/Scots_Guide/intro/electron.htm Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html Audio Misc http://www.audiomisc.co.uk/index.html _______________________________________________ get_iplayer mailing list [email protected] http://lists.infradead.org/mailman/listinfo/get_iplayer
