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• I could not encode using the Intel® Media Server Studio on the ZOTAC ZBOX PI225

  22 avril 2018, par Ubunkun

  I’ve succeeded to install the Intel® Media Server Studio to the
  ZOTAC ZBOX PI225. And, I’ve built the ffmepg as following.

  $ ffmpeg -codecs | grep qsv
  
  ffmpeg version N-90764-g396c019 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-16)
  
    configuration: --enable-libmfx
  
    libavutil      56. 15.100 / 56. 15.100
  
    libavcodec     58. 19.100 / 58. 19.100
  
    libavformat    58. 13.100 / 58. 13.100
  
    libavdevice    58.  4.100 / 58.  4.100
  
    libavfilter     7. 18.100 /  7. 18.100
  
    libswscale      5.  2.100 /  5.  2.100
  
    libswresample   3.  2.100 /  3.  2.100
  
   DEV.LS h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_qsv ) (encoders: h264_qsv h264_vaapi )
  
   DEV.L. hevc                 H.265 / HEVC (High Efficiency Video Coding) (decoders: hevc hevc_qsv ) (encoders: hevc_qsv hevc_vaapi )
  
   DEVIL. mjpeg                Motion JPEG (encoders: mjpeg mjpeg_qsv mjpeg_vaapi )
  
   DEV.L. mpeg2video           MPEG-2 video (decoders: mpeg2video mpegvideo mpeg2_qsv ) (encoders: mpeg2video mpeg2_qsv mpeg2_vaapi )
  
   D.V.L. vc1                  SMPTE VC-1 (decoders: vc1 vc1_qsv )
  
   DEV.L. vp8                  On2 VP8 (decoders: vp8 vp8_qsv ) (encoders: vp8_vaapi )

  When I’ve tried to encode using ffmpeg, but It occurred error as below.

   $ ffmpeg -i original.avi -c:v h264_qsv -profile:v main -b:v 2000k -r 30 -s 1280x720  -look_ahead 0 qsv.mp4
  
  ffmpeg version N-90764-g396c019 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-16)
  
    configuration: --enable-libmfx
  
    libavutil      56. 15.100 / 56. 15.100
  
    libavcodec     58. 19.100 / 58. 19.100
  
    libavformat    58. 13.100 / 58. 13.100
  
    libavdevice    58.  4.100 / 58.  4.100
  
    libavfilter     7. 18.100 /  7. 18.100
  
    libswscale      5.  2.100 /  5.  2.100
  
    libswresample   3.  2.100 /  3.  2.100
  
  Input #0, avi, from 'original.avi':
  
    Metadata:
  
      encoder         : FairUse Wizard - http://fairusewizard.com
  
    Duration: 01:41:12.11, start: 0.000000, bitrate: 965 kb/s
  
      Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 592x304 [SAR 1:1 DAR 37:19], 828 kb/s, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
  
      Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, fltp, 128 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg4 (native) -> h264 (h264_qsv))
  
    Stream #0:1 -> #0:1 (mp3 (mp3float) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  [mpeg4 @ 0x2fe5700] Video uses a non-standard and wasteful way to store B-frames ('packed B-frames'). Consider using the mpeg4_unpack_bframes bitstream filter without encoding but stream copy to fix it.
  
  [h264_qsv @ 0x2fce7c0] Encoder will work with partial HW acceleration
  
  [h264_qsv @ 0x2fce7c0] Error initializing the encoder: invalid video parameters (-15)
  
  Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
  
  [aac @ 0x2ff0e00] Qavg: 14764.986
  
  [aac @ 0x2ff0e00] 2 frames left in the queue on closing
  
  Conversion failed!

  It seems like that something of parameter missing, I think.

  If you have an idea to solve this, let me know.

  Bests,

• Streaming to Facebook Live from ffmpeg gets terminated

  24 avril 2021, par Raghavendra

  I am trying to capture the canvas on browser (canvas.captureStream), add audio ( captured using getUserMedia and added to stream using canvasStream.addTracks) and send it to server. Server sends the stream ( after encoding with H264 ) to facebook live using ffmpeg. However the stream is not stable and gets disconnected within minutes.
If the video along with audio tracks (using getMediaUser) is directly(without canvas.captureStream) sent it works fine. I am suspecting it has to do with the audio track not being proper and hence facebook rejecting it ( no particular error from ffmpeg, it just exits with IO error). Need help in figuring out the right way to send canvas stream along with audio.

  


  Current ffmpeg command is as below

  


  ffmpeg -i - -c:v libx264 -crf 23 -preset ultrafast \&#xA;       -tune zerolatency -max_muxing_queue_size 1000 \&#xA;       -vsync cfr -async 1 -bufsize 2M -r 30 -g 60 -keyint_min 30 \&#xA;       -x264opts keyint=30 -pix_fmt yuv420p -level 3 \&#xA;       -c:a aac -b:a 96k -ar 96000 \&#xA;       -f  tee -map 0:v -map 0:a [f=flv] <rtmp url="url" 1="1">  | [f=flv] <rtmp url="url" 2="2">&#xA;</rtmp></rtmp>

  


  Note : In the above command and are replaced with actual urls ( including the session key required )

  


  My settings to capture canvas and audio on browser are as below

  


  
    canvasStream = canvas.captureStream(30);
    audioTrack = stream.getTracks().filter( (track) => {
          return track.kind === 'audio';
        })[0];
    canvasStream.addTrack(audioTrack);



  


  Note : Audio constraints given in getUserMedia are as below

  


  audio: {
        sampleRate: 44100, 
        echoCancellation: true
      }


  


  Error given by ffmpeg while exiting is as below

  


  FFMPEG:[flv @ 0x5626ecf0f7c0] Failed to update header with correct duration.
[flv @ 0x5626ecf0f7c0] Failed to update header with correct filesize.

FFMPEG:[tee @ 0x5626ec8550c0] Slave muxer #1 failed, aborting.
av_interleaved_write_frame(): Broken pipe
FFMPEG:[flv @ 0x5626ecbe8840] Failed to update header with correct duration.

FFMPEG:[flv @ 0x5626ecbe8840] Failed to update header with correct filesize.

FFMPEG:frame= 2378 fps= 22 q=22.0 Lsize=N/A time=00:01:21.17 bitrate=N/A dup=2202 drop=5 speed=0.745x    
video:18916kB audio:959kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

FFMPEG:[libx264 @ 0x5626ec855b80] frame I:80    Avg QP:13.97  size:115968
[libx264 @ 0x5626ec855b80] frame P:2298  Avg QP:16.77  size:  4392
[libx264 @ 0x5626ec855b80] mb I  I16..4: 100.0%  0.0%  0.0%

FFMPEG:[libx264 @ 0x5626ec855b80] mb P  I16..4:  3.8%  0.0%  0.0%  P16..4:  9.5%  0.0%  0.0%  0.0%  0.0%    skip:86.7%
[libx264 @ 0x5626ec855b80] coded y,uvDC,uvAC intra: 26.3% 42.2% 13.6% inter: 2.9% 6.1% 0.1%
[libx264 @ 0x5626ec855b80] i16 v,h,dc,p: 34% 26% 23% 17%
[libx264 @ 0x5626ec855b80] i8c dc,h,v,p: 46% 27% 20%  7%
[libx264 @ 0x5626ec855b80] kb/s:1954.96
[aac @ 0x5626ec84d200] Qavg: 122.161
Conversion failed!


  


  Appreciate any help with this.

  


• FFMPEG : tee pseudo-muxer to RTMP endpoint with authorization

  20 janvier 2019, par stevendesu

  I have an RTMP server which requires authorization to stream to. In FFMPEG, I can stream to it like so :

  ffmpeg \
  
      -i <input /> \
  
      -c:v libx264 \
  
      -c:a speex \
  
      -f flv \
  
      "rtmp://server/instance live=true pubUser=user pubPasswd=pass playpath=stream_id"

  Now I wish to split this stream out to two such endpoints without re-encoding

  I can get it working with re-encoding like so :

  ffmpeg \
  
      -i <input /> \
  
      -c:v libx264 \
  
      -c:a speex \
  
      -f flv \
  
      "rtmp://server1/instance live=true pubUser=user pubPasswd=pass playpath=stream_id"
  
      -c:v libx264 \
  
      -c:a speex \
  
      -f flv \
  
      "rtmp://server2/instance live=true pubUser=user pubPasswd=pass playpath=stream_id"

  However I tried taking a look at FFMPEG’s guide on this subject and it led to nothing but errors :

  Attempt 1

  Direct usage of -f tee

  ffmpeg \
  
      -i <input /> \
  
      -c:v libx264 \
  
      -c:a speex \
  
      -f tee \
  
      -map 0:v \
  
      -map 0:a \
  
      "[f=flv]rtmp://server1/instance live=true pubUser=user pubPasswd=pass playpath=stream_id| \
  
       [f=flv]rtmp://server2/instance live=true pubUser=user pubPasswd=pass playpath=stream_id"

  Yields :

  [rtmp @ 0x3fe7f40] No credentials set
  
  [rtmp @ 0x3fe7f40] Server error: [ AccessManager.Reject ] : [ code=403 need auth ] :

  Attempt 2

  Using quotes around URL and parameters

  ffmpeg \
  
      -i <input /> \
  
      -c:v libx264 \
  
      -c:a speex \
  
      -f tee \
  
      -map 0:v \
  
      -map 0:a \
  
      "[f=flv]\"rtmp://server1/instance live=true pubUser=user pubPasswd=pass playpath=stream_id\"| \
  
       [f=flv]\"rtmp://server2/instance live=true pubUser=user pubPasswd=pass playpath=stream_id\""

  Yields :

  [tee @ 0x39837e0] Slave '[f=flv]"rtmp://server1/instance live=true pubUser=user pubPasswd=pass playpath=stream_id"': error opening: No such file or directory

  Attempt 3

  Quotes around everything

  ffmpeg \
  
      -i <input /> \
  
      -c:v libx264 \
  
      -c:a speex \
  
      -f tee \
  
      -map 0:v \
  
      -map 0:a \
  
      "\"[f=flv]rtmp://server1/instance live=true pubUser=user pubPasswd=pass playpath=stream_id\"| \
  
       \"[f=flv]rtmp://server2/instance live=true pubUser=user pubPasswd=pass playpath=stream_id\""

  Yields :

  [NULL @ 0x393a820] Unable to find a suitable output format for '"[f=flv]rtmp://server1/instance live=true pubUser=user pubPasswd=pass playpath=stream_id"'

  Attempt 4

  Alternate URL schema to avoid spaces

  ffmpeg \
  
      -i <input /> \
  
      -c:v libx264 \
  
      -c:a speex \
  
      -f tee \
  
      -map 0:v \
  
      -map 0:a \
  
      "[f=flv]rtmp://user:pass@server1/instance/stream_id| \
  
       [f=flv]rtmp://user:pass@server2/instance/stream_id"

  This seemed to work, but FFMPEG started outputting this :

  frame=   89 fps= 13 q=0.0 Lsize=N/A time=00:00:03.27 bitrate=N/A dup=18 drop=0 speed=0.469x

  Notice the bitrate=N/A and the speed=0.469x ? Both concerns. Then I go to the player to watch my stream and it’s solid black. No data is actually coming through.

  What am I doing wrong, and how do I get this stream working ?