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• RTSP to RTMP using FFMPEG on Raspberry Pi to YouTube Livestream ends prematurely (and sometimes doesn't start)

  12 mars 2021, par user203875

  I have been running a program from my raspberry pi 4 that converts a RTSP network camera feed to RTMP for YouTube. The stream used to run non-stop every day. I didn't have to do anything. I have a program in place that would restart if the feed died.

  


  Nothing has changed with that program in 2 years. About a month ago, the feed stopped working. I just started into trying to figure out why. Maybe someone has some ideas on what is going on ?

  


  In order for me to start the feed, I must also start a studio.youtube.com browser session showing the feed information. If that web page is up and running, the live stream will start. While I can't say for certain that it NEVER starts without this session running, it seems that way.

  


  Usually the stream lasts for an hour or two. Rarely more than four hours.

  


  When I start up a studio.youtube.com session after the stream dies the "Dimiss" or "Edit in Studio" message is on the page. I have to hit "dismiss" before I can start up the stream again.

  


  Is there a solution to this ?

  


  Again, my program didn't change, so I'm at a loss for what I can do to fix this.

  


• Is it possible to adjust the timeout for ffmpeg on SDP ?

  1er avril 2021, par user3474565

  I have rtpdump files that I would like to be able to convert to webm or mp4 on demand and on the fly. To do this, I'm streaming their packets out extremely rapidly and having ffmpeg read them in using an SDP file. The packets come through and are transcoded in a second or two, since the videos are fairly short. But then there is an additional 10-second wait afterward because the ffmpeg network timeout for SDP defaults to 10 seconds ; I'd like to reduce it. Unfortunately, the -timeout and -stimeout options don't seem to be available when I'm using -i with an SDP file (I get -timeout option not found).

  


  I looked around online, and it seems that 6 or 7 years ago people were having similar issues and some people made pull requests into FFmpeg to add this as an option for RSTP and SDP. I know this went through for RSTP because it's in the documentation know ; did anything ever happen with SDP ? Is it possible for me to set this option, or maybe to terminate ffmpeg manually when I know the stream is done ?

  


• FFMPEG, player plays jerky video after encoding

  9 septembre 2020, par AKL

  I've been using FFMPEG on Windows 10 for a while. To help me do my job, I have got several DOS batch files which take parameters and perform tasks like cut from beginning, blur area, mute audio etc.

  


  I usually take big videos, extract the parts that I like using Avidemux, cut / apply filter on some parts using FFMPEG, join them using FFMPEG and then encode again to get rid of any errors (or jerkiness, etc) on my target player, which is Kodi 18.xx running on an Android TV (TCL brand).

  


  I have done a similar process for a video that I have been doing for several years and this video seems to be out of my control. I have chopped up the video using Avidemux 2.7.2. The video has been cut at key frames. If I take a single un-encoded file, it runs perfectly on my Android TV. If I encode it using FFMPEG, it starts to jerk when played on my Android TV.

  


  The videos always plays fine on VLC player running on my PC.

  


  Some information that may be helpful. I can attach detailed frame information if desired.

  


  ffmpeg version 4.3 Copyright (c) 2000-2020 the FFmpeg developers
      built with gcc 9.3.1 (GCC) 20200621
      configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --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-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
      libavutil      56. 51.100 / 56. 51.100
      libavcodec     58. 91.100 / 58. 91.100
      libavformat    58. 45.100 / 58. 45.100
      libavdevice    58. 10.100 / 58. 10.100
      libavfilter     7. 85.100 /  7. 85.100
      libswscale      5.  7.100 /  5.  7.100
      libswresample   3.  7.100 /  3.  7.100
      libpostproc    55.  7.100 / 55.  7.100


  


  Showing info for the source file. Codec is hevc, I think FFMPEG does not have default support for ?

  


  ffmpeg -i _p007_cut_start.mp4 -hide_banner
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '_p007_cut_start.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
        compatible_brands: isomiso2mp41
        encoder         : Lavf58.20.100
      Duration: 00:00:08.51, start: 0.006000, bitrate: 5501 kb/s
        Stream #0:0(und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv, bt709), 1920x816 [SAR 1:1 DAR 40:17], 5091 kb/s, 23.98 fps, 23.98 tbr, 24390 tbn, 23.98 tbc (default)
        Metadata:
          handler_name    : VideoHandler
        Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 401 kb/s (default)
        Metadata:
          handler_name    : SoundHandler


  


  Showing info for the file that was encoded :

  


  ffmpeg -i p007_done2.mp4 -hide_banner
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'p007_done2.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
        compatible_brands: isomiso2avc1mp41
        encoder         : Lavf58.45.100
      Duration: 00:00:08.53, start: 0.000000, bitrate: 3092 kb/s
        Stream #0:0(und): Video: h264 (High 10) (avc1 / 0x31637661), yuv420p10le, 1920x816 [SAR 1:1 DAR 40:17], 2743 kb/s, 23.98 fps, 23.98 tbr, 24390 tbn, 47.95 tbc (default)
        Metadata:
          handler_name    : VideoHandler
        Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 345 kb/s (default)
        Metadata:
          handler_name    : SoundHandler


  


  I would appreciate if someone can point to me where I am going wrong.

  


  The command used to perform the encoding is as follows (only the library was swapped between libx264 and lib265) :

  


  ffmpeg -i in.mp4 -map 0:v -c:v libx264 -video_track_timescale 24390 -crf 23 -map 0:a -c:a aac -copyts -vsync 0 -async 0 -movflags +faststart out.mp4


  


  P.S. My knowledge is more based on trial-and-error and I don't understand video formats (and concepts) much except for what got me to this point.

  


  Regards,
AK