[FFmpeg-user] FFMpeg Streaming via UDP

Thu May 5 01:33:39 CEST 2016

Bogdan Mariesan wrote:
> Hi everyone,
>
> I am trying to achieve a *P2P *connection via *UDP *and for that I'm
> following the wiki guide.
>
> On my server I am using:
>
> *ffmpeg -f dshow -video_size 640x360 -rtbufsize 702000k -framerate 30 -i
> video="Integrated Camera":audio="Microphone (5- Logitech USB Headset H340)"
> -r 30 -threads 4 -vcodec libx264 -pix_fmt yuv420p -tune zerolatency -preset
> ultrafast -f mpegts udp:/10.166.141.198:23202 <http://10.166.141.198:23202>*

Well I'm lost already as 10/8 is a local address, plus what's the http bit?

>
> Where *10.166.141.198 *is the IP of an Android device and *23202 *is the
> UDP port opened by the NAT after doing UDP hole punching.

What is this udp hole punching (and why do you need it with a local 
address)?

>
> Based on the example in the guide (
> https://trac.ffmpeg.org/wiki/StreamingGuide) I assume on the client I have
> to connect to the client in a similar manner. I might be wrong here since
> the guide uses the same IP address for both client and server.
>
> So on the client I am connection the URL *udp://5.2.55.19:51810?localport=50341
> <http://5.2.55.19:51810?localport=50341>*.
> Where *5.2.55.19 *is the IP of the serverm *51810 *is the public port and
> *50341* is the private port obtained after doing UDP hole punching.
> On the client side the stream seems to work but on my mobile device the app
> i have built using IJKPlayer (https://github.com/Bilibili/ijkplayer)
> doesn't display my stream. So is it due to the way I am listening for the
> UDP stream?
>
>
> Client side log:
>
> ffmpeg version N-79630-g9ac154d Copyright (c) 2000-2016 the FFmpeg
> developers
>    built with gcc 5.3.0 (GCC)
>    configuration: --enable-gpl --enable-version3 --disable-w32threads
> --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
> --enable-gnutls --enable-iconv --enable-libass --enable-libbluray
> --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
> --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmfx
> --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
> --enable-libopenjpeg --enable-libopus --enable-librtmp
> --enable-libschroedinger --enable-libsnappy --enable-libsoxr
> --enable-libspeex --enable-libtheora --enable-libtwolame
> --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis
> --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
> --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
> --enable-lzma --enable-decklink --enable-zlib
>    libavutil      55. 22.101 / 55. 22.101
>    libavcodec     57. 38.100 / 57. 38.100
>    libavformat    57. 34.103 / 57. 34.103
>    libavdevice    57.  0.101 / 57.  0.101
>    libavfilter     6. 44.100 /  6. 44.100
>    libswscale      4.  1.100 /  4.  1.100
>    libswresample   2.  0.101 /  2.  0.101
>    libpostproc    54.  0.100 / 54.  0.100
> Guessed Channel Layout for  Input Stream #0.1 : stereo
> Input #0, dshow, from 'video=Integrated Camera:audio=Microphone (5-
> Logitech USB Headset H340)':
>    Duration: N/A, start: 1386931.560000, bitrate: N/A
>      Stream #0:0: Video: rawvideo, bgr24, 640x360, 30 fps, 31 tbr, 10000k tbn
>      Stream #0:1: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
> [libx264 @ 0000000008a4be20] using cpu capabilities: MMX2 SSE2Fast SSSE3
> SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
> [libx264 @ 0000000008a4be20] profile Constrained Baseline, level 3.0
> [mpegts @ 00000000086fd880] Using AVStream.codec to pass codec parameters
> to muxers is deprecated, use AVStream.codecpar instead.
>      Last message repeated 1 times
> Output #0, mpegts, to 'udp://109.166.141.198:61623?localport=53366':
>    Metadata:
>      encoder         : Lavf57.34.103
>      Stream #0:0: Video: h264, yuv420p, 640x360, q=2-31, 30 fps, 90k tbn
>      Metadata:
>        encoder         : Lavc57.38.100 libx264
>      Side data:
>        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
>      Stream #0:1: Audio: mp2, 44100 Hz, stereo, s16, 384 kb/s
>      Metadata:
>        encoder         : Lavc57.38.100 mp2
> Stream mapping:
>    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
>    Stream #0:1 -> #0:1 (pcm_s16le (native) -> mp2 (native))
> Press [q] to stop, [?] for help
> Past duration 0.659996 too large
> Past duration 0.699989 too large
> Past duration 0.739998 too large
> Past duration 0.779991 too large
> Past duration 0.619987 too large
> Past duration 0.659996 too large
> Past duration 0.699989 too large
> frame=   23 fps=0.0 q=22.0 size=     122kB time=00:00:01.13 bitrate=
> 878.5kbits/s speed=2.26x
> Past duration 0.739998 too large
> Past duration 0.779991 too large
> Past duration 0.619987 too large
> Past duration 0.629997 too large
> Past duration 0.669991 too large
> Past duration 0.679985 too large
> Past duration 0.689995 too large
> frame=   37 fps= 37 q=22.0 size=     201kB time=00:00:01.60
> bitrate=1031.2kbits/s speed= 1.6x
> Past duration 0.699989 too large
> Past duration 0.739998 too large
> Past duration 0.749992 too large
> frame=   53 fps= 35 q=22.0 size=     275kB time=00:00:02.13
> bitrate=1054.7kbits/s speed=1.42x
>
> Kind regards,
>
> *Bogdan Emil Mariesan*
> Senior Software Engineer
>
> *BuddyGuard UG* (haftungsbeschränkt)
> Dircksenstr. 40
> 10178 Berlin
>
> m:         +40 743 901 331
> w.           www.buddyguard.io
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