[asterisk-users] [asterisk-app-dev] ARI Channel recording

Joshua C. Colp jcolp at digium.com
Wed Oct 16 13:09:21 CDT 2019

On Wed, Oct 16, 2019, at 3:03 PM, Marcelo Garay wrote:
> Thank you for your answer!! 
> Unfortunately I'm using the CEF browser based on Chromium and it 
> doesn't support H264 because license isn't free so renegotiation is not 
> an option.
> I've noticed when recording a channel with video asterisk automatically 
> tries to save the video feed to a separate file besides the .wav. In my 
> case I can see "file.c:1484 ast_writefile: No such format 'vp9' " error 
> in the logs, so I would assume is just that the code for VP9 encoding 
> hasn't been added to Asterisk yet. Do you know if this is due to any 
> other reason besides nobody taking the time to implement it (reasons 
> like VP9 licensing, performance hit, etc.)? It seems like VP9 is 
> royalty-free and the encoder source code is on GitHub. I might try to 
> look into making a PR for this sometime in the future if I have some 
> time, but I don't want to waste my time if this idea has already been 
> discussed among developers and discarded for some reason.

Encoding is not the same as file recording and playback. It's how the data is stored in a file and retrieved, which doesn't involve any conversion. I don't think anyone has discussed working on such a thing or thought about it really.

Joshua C. Colp
Digium - A Sangoma Company | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

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