[Freeswitch-users] Video playback in 1.7

Wed Jul 1 04:54:53 MSD 2015

That error happens when avresample_open call fails.  This is going to be some sort of issue with how libav was built as this is known working.

> On Jun 30, 2015, at 7:51 PM, Stanislav Sinyagin <ssinyagin at gmail.com> wrote:
> 
> I made a few more tests: the original file has AAC audio, and avconv needs "-strict experimental" option to process that. Probably that's why FreeSWITCH crashes. After I converted the video to 320x240 and MP3 audio, I get a different error: 
> 
> 2015-07-01 01:46:22.701171 [ERR] avformat.c:1136 Failed to initialize the resampling context
> 
> same error if I need to produce 48kHz OPUS or 8kHZ G711.
> 
> VLC plays back both the original and converted videos so far.
> 
> I'll play around with it during the week.
> 
> 
> 
> 
> On Tue, Jun 30, 2015 at 8:45 PM, Anthony Minessale <anthony.minessale at gmail.com <mailto:anthony.minessale at gmail.com>> wrote:
> Depending on what ext you have and the proper build of mod_av I can't comment.
> 
> I can confirm with the properly installed debian packages for jessie that at least mp4 files work either by reference to .mp4 files or by using av:///path/to/file.mp4
> 
> 
> 
> On Tue, Jun 30, 2015 at 12:46 PM, Stanislav Sinyagin <ssinyagin at gmail.com <mailto:ssinyagin at gmail.com>> wrote:
> av:///tmp/somefile.ext crashed the daemon, I didn't yet find the time to analyze it and file a jira.
> 
> On Jun 30, 2015 7:43 PM, "Anthony Minessale" <anthony.minessale at gmail.com <mailto:anthony.minessale at gmail.com>> wrote:
> mod_av is not an endpoint its a codec and file format module.
> 
> 2015-06-30 12:40:40.248642 [NOTICE] switch_loadable_module.c:213 Adding Codec H264 99 H264 Video 90000hz 0ms (VBR)
> 
> 2015-06-30 12:40:40.248642 [NOTICE] switch_loadable_module.c:292 Adding Application 'record_av'
> 
> 2015-06-30 12:40:40.248642 [NOTICE] switch_loadable_module.c:338 Adding API Function 'av_format'
> 
> 2015-06-30 12:40:40.248642 [NOTICE] switch_loadable_module.c:338 Adding API Function 'av_codec'
> 
> 2015-06-30 12:40:40.248642 [NOTICE] switch_loadable_module.c:390 Adding File Format 'av'
> 
> 2015-06-30 12:40:40.248642 [NOTICE] switch_loadable_module.c:390 Adding File Format 'rtmp'
> 
> 2015-06-30 12:40:40.248642 [NOTICE] switch_loadable_module.c:390 Adding File Format 'mp4'
> 
> 2015-06-30 12:40:40.248642 [NOTICE] switch_loadable_module.c:390 Adding File Format 'mov'
> 
> 
> 
> It was av:// not avformat:// i was remembering the old version.
> 
> 
> 
> if av:///tmp/somefile.ext works then it can be added to mod_avformat_load function in avformat.c:1949 ish  to register the extension for convenience.
> 
>  
> 
> 
> 
> On Tue, Jun 30, 2015 at 2:07 AM, Stanislav Sinyagin <ssinyagin at gmail.com <mailto:ssinyagin at gmail.com>> wrote:
> mod_av doesn't seem to be registering an endpoint, so prefixing avformat:// or av:// does not help. I'll have a closer look later and probably open a Jira
> 
> On Tue, Jun 30, 2015 at 1:18 AM, Anthony Minessale <anthony.minessale at gmail.com <mailto:anthony.minessale at gmail.com>> wrote:
> Webm has its own module.  Av and vlc both have broken webm at the time of coding.
> 
> 
> mod_vlc can play other formats but they are not registered in the module by file exten however you can use vlc:// syntax.
> 
> mp4 is the safest bet because it works in mod_av which is more stable than vlc.  More formats can be added to mod_av as well but I don't remember if its as easy as avformat://<path>
> 
> We don't have any choosing best format etc.  It's not going to be a point of focus to squeeze performance out of stuff like that in this stage of development.
> 
> On Monday, June 29, 2015, Stanislav Sinyagin <ssinyagin at gmail.com <mailto:ssinyagin at gmail.com>> wrote:
> by the way, is there a way for playback to select a best matching
> encoding, like it does with audio sample rates?
> 
> On Tue, Jun 30, 2015 at 12:56 AM, Giovanni Maruzzelli <gmaruzz at gmail.com <>> wrote:
> > h264 I believe is supported...
> >
> > On Tue, Jun 30, 2015 at 12:48 AM, Stanislav Sinyagin <ssinyagin at gmail.com <>>
> > wrote:
> >>
> >> the newest 1.7 freeswitch successfully played an .mp4 file with
> >> "playback" application, and the picture was sent to an VP8 client
> >> (linphone on Android).
> >>
> >> The playback took about 20% CPU usage on a Xeon core -- probably
> >> because of resising work. The source file was taken from
> >> http://www.quirksmode.org/html5/tests/video.html <http://www.quirksmode.org/html5/tests/video.html>
> >>
> >>
> >> Question: what other file formats are supported?
> >>
> >> I tried .ogv and .webm, but I got "Invalid file format" error.
> >>
> >> thanks
> >>
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> >
> >
> >
> >
> > --
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> >
> > Giovanni Maruzzelli
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> 
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