[vdr] Transfer mode vs TS playback: any difference in TS streams for vdr.1.7.19?
Hi, I'm currently updating the softdevice plugin to work with the changes to TS format that started with vdr-1.7.1 and also current versions of ffmpeg (libavcodec does the actual decoding). I've made some progress with vdr-1.7.19: Old PES recordings play fine (as I'd hoped they would!) New TS recordings play: the video looks fine. PlayTSVideo convertes to PES and passes that to PlayVideo of the output device (I assume it would be relatively straightforward to implement a proper PlayTs using avcodec but that's for a later date!). The sound is totally messed up: just lots of random buzzing noises (not looked into the audio yet). Tranfer mode does not work at all, all I get is a black screen and silence. Before I dig into buffers, etc., is there any difference between the streams sent to PlayTS in transfer mode and in playback? I see that transfer mode generates a PAT/PMT on the fly and passes the stream directly to PlayTs. Does a similar thing happen to a recording, i.e. the PAT/PMT is added before writing to disk and then the stream sent during playback is identical to that which would have been sent if it had been watched in transfer mode? Does the output device ulitimately receive the same set of PES packets? Thanks, Laz ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
Re: [vdr] Transfer mode vs TS playback: any difference in TS streams for vdr.1.7.19?
On 11.07.2011, at 03:21, Laz l...@club-burniston.co.uk wrote: Hi, I'm currently updating the softdevice plugin to work with the changes to TS format that started with vdr-1.7.1 and also current versions of ffmpeg (libavcodec does the actual decoding). I've made some progress with vdr-1.7.19: Old PES recordings play fine (as I'd hoped they would!) New TS recordings play: the video looks fine. PlayTSVideo convertes to PES and passes that to PlayVideo of the output device (I assume it would be relatively straightforward to implement a proper PlayTs using avcodec but that's for a later date!). The sound is totally messed up: just lots of random buzzing noises (not looked into the audio yet). Tranfer mode does not work at all, all I get is a black screen and silence. Before I dig into buffers, etc., is there any difference between the streams sent to PlayTS in transfer mode and in playback? I see that transfer mode generates a PAT/PMT on the fly and passes the stream directly to PlayTs. Does a similar thing happen to a recording, i.e. the PAT/PMT is added before writing to disk and then the stream sent during playback is identical to that which would have been sent if it had been watched in transfer mode? Does the output device ulitimately receive the same set of PES packets? In Transfer Mode onlx one single PAT/PMT is generated at the very start of it, while a recording contains a PAT/PMT at the beginning of every GOP. Klaus ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
Re: [vdr] Transfer mode vs TS playback: any difference in TS streams for vdr.1.7.19?
On Monday 11 Jul 2011, Klaus Schmidinger wrote: On 11.07.2011, at 03:21, Laz l...@club-burniston.co.uk wrote: Hi, I'm currently updating the softdevice plugin to work with the changes to TS format that started with vdr-1.7.1 and also current versions of ffmpeg (libavcodec does the actual decoding). I've made some progress with vdr-1.7.19: Old PES recordings play fine (as I'd hoped they would!) New TS recordings play: the video looks fine. PlayTSVideo convertes to PES and passes that to PlayVideo of the output device (I assume it would be relatively straightforward to implement a proper PlayTs using avcodec but that's for a later date!). The sound is totally messed up: just lots of random buzzing noises (not looked into the audio yet). Tranfer mode does not work at all, all I get is a black screen and silence. Before I dig into buffers, etc., is there any difference between the streams sent to PlayTS in transfer mode and in playback? I see that transfer mode generates a PAT/PMT on the fly and passes the stream directly to PlayTs. Does a similar thing happen to a recording, i.e. the PAT/PMT is added before writing to disk and then the stream sent during playback is identical to that which would have been sent if it had been watched in transfer mode? Does the output device ulitimately receive the same set of PES packets? In Transfer Mode onlx one single PAT/PMT is generated at the very start of it, while a recording contains a PAT/PMT at the beginning of every GOP. Thanks for the quick response! :-) In that case, I suspect my problem lies somewhere in the buffering or timing. I will delve further... Cheers, Laz ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
Re: [vdr] Transfer mode vs TS playback: any difference in TS streams for vdr.1.7.19?
Am 11.07.2011 18:12, schrieb Klaus Schmidinger: On 11.07.2011, at 03:21, Laz l...@club-burniston.co.uk wrote: Before I dig into buffers, etc., is there any difference between the streams sent to PlayTS in transfer mode and in playback? I see that transfer mode generates a PAT/PMT on the fly and passes the stream directly to PlayTs. In Transfer Mode onlx one single PAT/PMT is generated at the very start of it, while a recording contains a PAT/PMT at the beginning of every GOP. Correct me if I'm wrong, but doesn't transfer mode receive PCR clock data, while playback is without PCR clock? Cheers, Udo ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
