The VideoLAN Forums

Hi,

I'm pulling a m3u8 stream using clvc and outputting to mp4, and I get the errors:

[00007f29c0c073d8] httplive stream: HTTP Live Streaming (localhost:8080/live/test/playlist_dvr.m3u8)
[00007f29c0c18b78] ts demux: MPEG-4 descriptor not found for pid 0x101 type 0xf
[00007f29c0cb2a68] packetizer_mpeg4audio decoder: AAC channels: 2 samplerate: 48000
[00007f29c0003138] core mux error: cannot add a new stream (unsupported while muxing to this format). You can try increasing sout-mux-caching value
[00007f29c0ca93c8] core decoder error: cannot create packetizer output (h264)
[00007f29c0c18b78] ts demux error: libdvbpsi (PSI decoder): TS duplicate (received 0, expected 1) for PID 0

here's the command line

cvlc http://localhost:8080/live/test/playlist_dvr.m3u8 --sout=file/mp4:/shared/tmp/test3.mp4

The resulting file has only audio, no video, which would be expected from the errors... but the source HLS stream definitely has h264 and aac

thanks
Ricardo

As the error says. The MP4 muxer cannot add streams dynamically. You need to use another muxer.

Thanks for pointing that out.

So what would be the appropriate muxer considering I'm dealing with h264/aac?

I tried TS, but I'm still not getting video.

cvlc http://localhost:8080/live/test/playlist_dvr.m3u8 --sout=file/ts:/shared/tmp/test3.mp4
VLC media player 2.2.0 Weatherwax (revision 2.2.0-0-g1349ef2)
[0000000001cfc3e8] core interface error: no suitable interface module
[0000000001b37118] core libvlc error: interface "globalhotkeys,none" initialization failed
[0000000001cfc3e8] dbus interface error: Failed to connect to the D-Bus session daemon: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
[0000000001cfc3e8] core interface error: no suitable interface module
[0000000001b37118] core libvlc error: interface "dbus,none" initialization failed
[0000000001cfc3e8] dummy interface: using the dummy interface module...
[00007fbb74c0b508] httplive stream: HTTP Live Streaming (localhost:8080/live/test/playlist_dvr.m3u8)
[00007fbb74c1cca8] ts demux: MPEG-4 descriptor not found for pid 0x101 type 0xf
[00007fbb74cb6588] packetizer_mpeg4audio decoder: AAC channels: 2 samplerate: 48000
[00007fbb74c1cca8] ts demux error: libdvbpsi (PSI decoder): TS duplicate (received 0, expected 1) for PID 0
[00007fbb74c1cca8] ts demux error: libdvbpsi (PSI decoder): TS duplicate (received 0, expected 1) for PID 4095
[00007fbb74c1cca8] ts demux error: libdvbpsi (PSI decoder): TS duplicate (received 0, expected 1) for PID 0
[00007fbb74c1cca8] ts demux error: libdvbpsi (PSI decoder): TS duplicate (received 0, expected 1) for PID 4095

Also after some point vlc stops streaming to the file and doesn't exit.

However if I play the hls stream on the gui vlc, it plays out

Does vlc have a command similar to ffprobe for me to see how vlc interprets the m3u8 stream?

"info" command shows the list of elementary stream. See also "help".

Note that VLC 2.2.0 is out of date.

I think I got the same error if I'm not mistaken, and probably due to a bug in VLC. Try VLC3-beta. It worked for me.