[Libav-user] [FFmpeg-user] RTMP issue

[David Ibbitson]

Hi William,

The ffmpeg code base is your friend in these types of situations. If you
look at rtmpproto.c and scroll down you will see all the available options.

David

On Thu, Oct 29, 2020 at 2:54 PM william keeling <williamkeeling at hotmail.com>
wrote:

> I still have not found a solution for this issue.  I wonder if I need to
> use avio_open2 (not avio_open).  Avio_open2 takes AVDictionary of options
> as a parameter.  Does anyone know how to find any documentation of the
> options that an available for the RTMP protocol?
> Thanks,
> William
> ------------------------------
> *From:* william keeling <williamkeeling at hotmail.com>
> *Sent:* Monday, August 24, 2020 6:33 PM
> *To:* FFmpeg user questions <ffmpeg-user at ffmpeg.org>;
> libav-user at ffmpeg.org <libav-user at ffmpeg.org>
> *Subject:* Re: [FFmpeg-user] RTMP issue
>
> I had avformat_network_init() in the code before and have found no
> difference with or without it.  I added back and reran the test again with
> the verbose logging and received the same results and same log.
>
> pi at pi2cam:/userland/build/bin $ ./rcam -D dmic_sv -d 180  -q 30 -w 1920
> -h 1080 rtmp://a.rtmp.youtube.com/live2/<KEY>
> [tcp @ 0x199bb70] Starting connection attempt to 2607:f8b0:401a:26::8 port
> 1935
> [tcp @ 0x199bb70] Successfully connected to 2607:f8b0:401a:26::8 port 1935
>
> [aac @ 0x19a9620] Qavg: 116.588
> [AVIOContext @ 0x199dfd0] Statistics: 0 seeks, 12400 writeouts
>
> Thanks please keep the ideas coming,
> William
> ------------------------------
> *From:* ffmpeg-user <ffmpeg-user-bounces at ffmpeg.org> on behalf of Chris
> Miceli <chris at miceli.net.au>
> *Sent:* Monday, August 24, 2020 6:05 PM
> *To:* FFmpeg user questions <ffmpeg-user at ffmpeg.org>
> *Subject:* Re: [FFmpeg-user] RTMP issue
>
> 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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