[FFmpeg-user] ffprobe with mpegts/udp

[Andriy Gelman]

I also have the issue when trying to recover the binary data from the
mpegts container via udp:

For example, this works fine

*$ echo "hello" > testfile.dat *
*$ ffmpeg -f bin -i testfile.dat -c copy -f mpegts output.ts*
*$ ffmpeg -f mpegts -i output.ts -c copy -map 0 -f data out.dat    #
out.dat is the same as testfile.dat*

However, when using udp, ffmpeg hangs (maybe expecting more data?):

*$ ffmpeg -f bin -i testfile.dat -c copy -f mpegts udp://127.0.0.1:6500
<http://127.0.0.1:6500>*

*$ ffmpeg -f mpegts -i udp://127.0.0.1:6500 <http://127.0.0.1:6500> -c copy
-map 0 -f data out.dat*

On Sat, 9 Feb 2019 at 10:16, Andriy Gelman <andriy.gelman at gmail.com> wrote:

>
> Hello,
>
> I have a question about using ffprobe with mpegts/udp.
>
> Consider the following example:
>
> *$ echo "test" > testfile.dat  #create test file*
> *$ ffmpeg -f bin -i testfile.dat -c copy -f mpegts output.ts*
>
> Running ffprobe on output.ts outputs the stream format
>
> *$ ffprobe output.ts  *
>
>
>
>
>
>
>
> *Input #0, mpegts, from 'output.ts':  Duration: N/A, start: 1.400000,
> bitrate: N/A  Program 1     Metadata:      service_name    : Service01
> service_provider: FFmpeg    Stream #0:0[0x100]: Data: bin_data
> ([6][0][0][0] / 0x0006)*
>
> However, when I use udp, i.e.
> *$ ffmpeg -f bin -i testfile.dat -c copy -f mpegts udp://127.0.0.1:6500
> <http://127.0.0.1:6500>*
>
> ffprobe just hangs and doesn't output any results:
> *$ ffprobe -f mpegts udp://127.0.0.1:6500 <http://127.0.0.1:6500>*
>
> Do I need to set some additional parameters, like probesize or analyze
> duration here?
>
> Your help is much appreciated!
> Thank you,
> Andriy
>
> P.S. I am on the origin/master branch of ffmpeg
>
>
>
>
>
>
>
>
>
>
>
>
> *ffmpeg version n4.1 Copyright (c) 2000-2018 the FFmpeg developersbuilt
> with gcc 8.2.1 (GCC) 20180831configuration: --prefix=/usr --disable-debug
> --disable-static --disable-stripping --enable-fontconfig --enable-gmp
> --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom
> --enable-libass --enable-libbluray --enable-libdrm --enable-libfreetype
> --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack
> --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb
> --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus
> --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libssh
> --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis
> --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265
> --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec
> --enable-nvenc --enable-omx --enable-shared --enable-version3libavutil
> 56. 22.100 / 56. 22.100libavcodec     58. 35.100 / 58. 35.100libavformat
> 58. 20.100 / 58. 20.100libavdevice    58.  5.100 / 58.
> 5.100libavfilter     7. 40.101 /  7. 40.101libswscale      5.  3.100 /  5.
> 3.100libswresample   3.  3.100 /  3.  3.100libpostproc    55.  3.100 / 55.
> 3.100*
>
>
>