[FFmpeg-user] RTMP issue

[Chris Miceli]

Hi William,

I'm by no means an expert on the matter but I tried having a look for you.
At least one issue would be that you are not calling
avformat_network_init() which
is a requirement for any protocol which needs network [1]

I would have tested and tried this for you, however I do not have the
hardware laying around.

I wish you the best of luck and let me know how it goes.

[1] - libavformat/libavformat.h lines 40-41

*Chris Miceli*

On Mon, Aug 24, 2020 at 10:17 AM william keeling <williamkeeling at hotmail.com>
wrote:

> I added the AV_LOG_VERBOSE and got the following output:
>
> pi at pi2cam:/userland/build/bin $ ./rcam -D dmic_sv -d 5  -q 30 -w 1920 -h
> 1080 rtmp://a.rtmp.youtube.com/live2/<KEY>
> [tcp @ 0x18acb70] Starting connection attempt to 2607:f8b0:401a:7::8 port
> 1935
> [tcp @ 0x18acb70] Successfully connected to 2607:f8b0:401a:7::8 port 1935
>
> [aac @ 0x18ba620] Qavg: 118.451
> [AVIOContext @ 0x18aefd0] Statistics: 0 seeks, 341 writeouts
>
>
> If you can point me to an example of logging callback I will try and add
> it if you think it will yield more useful information.
>
> Thanks in advance for your ideas and help,
> William
>
> ________________________________
> From: ffmpeg-user <ffmpeg-user-bounces at ffmpeg.org> on behalf of Moritz
> Barsnick <barsnick at gmx.net>
> Sent: Monday, August 24, 2020 9:25 AM
> To: FFmpeg user discussions <ffmpeg-user at ffmpeg.org>
> Subject: Re: [FFmpeg-user] RTMP issue
>
> Hi William
>
> On Mon, Aug 24, 2020 at 00:40:04 +0000, william keeling wrote:
>
> > My question is an issue with a program written to live stream to
> > YouTube working is all modes other than rtmp live stream.
>
> For programming with the ffmpeg libav* libraries, you should usually
> turn to the libav-user mailing list, But perhaps we can help.
>
> > finishes the stream is never processed by YouTube. When the stream is
> > piped (pipe:1 URL) thru FFMPEG (demuxed and muxed only -- ffmpeg -i -
> > -vcodec copy -acodec copy -f flv rtmp:<URL>) the live stream works
> > without issues.
>
> At least that means that your content encoding, bit rate, number of
> audio channels, and so on, are correct for YouTube. It's just the
> muxing, or perhaps something like a flag or metadata.
>
> > So, I need to understand what FFMPEG command line is doing with rtmp:
> URL that I am not doing with the FFMPEG API.
> > My source code is at github.com/wkeeling63/rcam. Any ideas you have I
> > would love to hear as I am stumped.
>
> Too bad ths only compiles on Raspberry Pi, so there's no way to
> reproduce your muxing issue.
>
> Since you didn't provide a log callback using av_log_set_callback(),
> shouldn't your application show all the usual ffmpeg/libav* log output
> on stdout? Can you provide us with that ouptut? Raise the log level
> with e.g. av_log_set_level(AV_LOG_VERBOSE), if required.
>
> Thanks,
> Moritz
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