AAC Audio inside mpeg transport stream - failure
I have a sample mpeg transport stream at http://pbx.mine.nu/dvhs/sample.ts (16megs) It contains mpeg2 video and 144kbps AAC audio it can be splitted by any tool that splits transport streams. The resulting mpeg video can be played by mplayer the resulting aac audio can be decoded by (say faad2) Mplayer does not play audio inside that stream It seems like perhaps somehow mplayer things that "if this is a ts file, audio will be mp2". Or something. In the debug output, it says it tries to open libmp3dec, and fails. Any idea how to get it working with this particular ts file? The broadcasts here all use this format, so i am quite interested in getting this to work. TIm
Hi, support for AAC in TS is still in very early stages; I still need to figure out how to determine certain parameters (such as bitrate/layer) before the stream can play correctly. I took the sample, and I will work on the demuxer one of these days. If you have any samples, please send me a link, so I can test the demuxer better. Thanks, Nico tim@pbx.mine.nu wrote:
[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html] I have a sample mpeg transport stream at http://pbx.mine.nu/dvhs/sample.ts (16megs)
It contains mpeg2 video and 144kbps AAC audio it can be splitted by any tool that splits transport streams. The resulting mpeg video can be played by mplayer the resulting aac audio can be decoded by (say faad2)
Mplayer does not play audio inside that stream It seems like perhaps somehow mplayer things that "if this is a ts file, audio will be mp2". Or something. In the debug output, it says it tries to open libmp3dec, and fails.
Any idea how to get it working with this particular ts file? The broadcasts here all use this format, so i am quite interested in getting this to work.
TIm
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support for AAC in TS is still in very early stages; I still need to figure out how to determine certain parameters (such as bitrate/layer) before the stream can play correctly.
I took the sample, and I will work on the demuxer one of these days.
If you have any samples, please send me a link, so I can test the demuxer better. Excellent. Please tell me (off-list) where to dump them, and I can give you as many test streams as you want. This is the DVB format around here, and I can easily record them. All the broadcasts use AAC audio, so I am quite interested in getting it to work. Also I haven't tried with mplayer, but I can also record radio stations in the same way - getting mpegts with some xml data and aac audio only. Eventually that would be nice to have working as well.
Also, it might be of interest that older (say 1+ months) old versions of mplayer played that transport stream properly (video only, anyhow). I just downloaded Sept 14th snapshot, and it fails to even play the video. So I don't know what changed. :( Thanks! Tim
tim@pbx.mine.nu wrote:
[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
support for AAC in TS is still in very early stages; I still need to figure out how to determine certain parameters (such as bitrate/layer) before the stream can play correctly.
I took the sample, and I will work on the demuxer one of these days.
If you have any samples, please send me a link, so I can test the demuxer better.
Excellent. Please tell me (off-list) where to dump them, and I can give you as many test streams as you want. This is the DVB format around here,
I thought it was ATSC
and I can easily record them. All the broadcasts use AAC audio, so I am quite interested in getting it to work. Also I haven't tried with mplayer, but I can also record radio stations in the same way - getting mpegts with some xml data and aac audio only. Eventually that would be nice to have working as well.
are these streams being broadcast by Astra or Hotbird satellites? If so I can take them with my dvb card.
Also, it might be of interest that older (say 1+ months) old versions of mplayer played that transport stream properly (video only, anyhow). I just downloaded Sept 14th snapshot, and it fails to even play the video. So I don't know what changed. :(
Thanks! Tim
This is strange and worrying. Did you test the same sample with two versions of mplayer and the newer version failed or did you test two different samples? No meaningful code was committed to demux_ts in this month. In any case, can you please run mplayer -v stream.ts >& log.txt and send me log.txt privately (the log is usually quite big). Thanks, Nico
I thought it was ATSC well, it probably is. its from satellite.
are these streams being broadcast by Astra or Hotbird satellites? If so I can take them with my dvb card. doubtful. this is japan-specific bs-digital broadcasting.
This is strange and worrying. Did you test the same sample with two versions of mplayer and the newer version failed or did you test two different samples? I usually keep a couple streams around. I've tested both versions with the same one. I'll run the test you mentioned this evening when I get home where I have a older (win32) version, so you can see the results.
(I doubt it's specific to Win32 version though. In this new Sept 14th or so version both Linux and Win32 versions fail identically. I'm mailing you the 1.0pre1 failure log after this message (1.0pre1 and Sept14 snapshot fail same way).
mplayer -v stream.ts >& log.txt and send me log.txt privately (the log is usually quite big).
Tim
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