[FFmpeg-user] Playing an uncompressed raw interlaced RTP video stream

[villastar at yahoo.com.au]

 On Friday, 28 September 2018, 6:01:08 am AWST, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:

> Please do, if it works your problem should be solved,
> I fear though that the "bitpacked" codec (the name alone
> makes me shiver) is broken and needs major changes.

In the past, we have used the same command to playback a raw 
uncompressed, non-interlaced RTP stream before with success. It is 
only when we tried it with an interlaced version that we encountered
this problem.

I also got around to trying the filter today - the playback still isn't 
quite right. From the console:

$ ffplay -protocol_whitelist file,rtp,udp -strict -2 -vf "il=i" -f sdp camera.sdp

ffplay version 4.0.2 Copyright (c) 2003-2018 the FFmpeg developers
  built with gcc 7.3.1 (GCC) 20180722
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
  libavutil      56. 14.100 / 56. 14.100
  libavcodec     58. 18.100 / 58. 18.100
  libavformat    58. 12.100 / 58. 12.100
  libavdevice    58.  3.100 / 58.  3.100
  libavfilter     7. 16.100 /  7. 16.100
  libswscale      5.  1.100 /  5.  1.100
  libswresample   3.  1.100 /  3.  1.100
  libpostproc    55.  1.100 / 55.  1.100
[udp @ 0000017923e68740] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
[udp @ 0000017923e78a00] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
[sdp @ 0000017923e57840] jitter buffer full   0KB sq=    0B f=0/0
[sdp @ 0000017923e57840] RTP: missed 4 packets
[sdp @ 0000017923e57840] Missed previous RTP Marker
    Last message repeated 1 times
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
Input #0, sdp, from 'camera.sdp':
  Metadata:
    title           : Camera 1
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: bitpacked (UYVY / 0x59565955), uyvy422, 720x576, 50 fps, 50 tbr, 90k tbn, 90k tbc
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0
[sdp @ 0000017923e57840] Missed previous RTP Markerq=    0B f=0/0

This time I used my phone camera to record the playback on my computer
screen. It can be viewed at:

  https://www.dropbox.com/s/phx9iagb6k3qdtr/playback_with_filter_resized.mp4?dl=0

For comparison, I went back and also recorded one without using the 
filter. The footage is at:

  https://www.dropbox.com/s/ixr33gsi2q5h0w9/playback_no_filter_resized.mp4?dl=0

> Carl Eugen