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• ffmpeg unicast vs multicast bandwidth usage

  14 février 2019, par user2884023

  Assuming there are no errors on this code below to (convert mpeg2.ts to h264) :

  $ ffmpeg
  
  -i playlist1.txt
  
  -vcodec h264
  
  -acodec mp3
  
  -s 1280x720
  
  -b:v 4808k
  
  -b:a 192k
  
  -bufsize 8000k
  
  -maxrate 5000k
  
  -r 30
  
  -muxdelay 0.1
  
  -f mpegts udp_multicast "rtp://hostname[:port]/path"

  If I have qty - 10, h.264 decoders receiving the RTP stream, is the bandwidth consumption (@5mb/s maxrate from FFMPEG) 50mb/s uploaded from my server (unicast) or because of the multicast protocol actually only 5mb/s uploaded / consumed at my server to all 10 decoders which are all capable of receiving the multicast transmission via RTP ?

  Also if I am not erroring by attempting to send the RTP feed out of FFMPEG assuimg my server is acting as a (tx) so it can be picked up directly as input by the h.264 decoders acting as receivers.

  Question : 5mb/s or 50mb/s being uploaded on my server end to 10 decoders with assigned FFMPEG command ?

• ffmpeg audio is stuttering when converting from h264 to mpeg2

  9 février 2019, par user11038211

  I want to convert from h264 stream source (streamlink) to mpeg2 video and send it to a DVB-T modulator (Hides UT100C). So far, I have managed to play the video smoothly, but audio is jerky. It sounds like parts are missing. I think that some parameters are not set perfectly :

  $streamlink -O https://zattoo.com/watch/orf-2 best | ffmpeg -re -i pipe:0 -vcodec mpeg2video -s 720x576 -r 30 -b:v 10M -b:a 64k -acodec mp2 -mpegts_original_network_id 1 -mpegts_transport_stream_id 1 -mpegts_service_id 1 -mpegts_pmt_start_pid 1000 -mpegts_start_pid 1001 -metadata service_provider="HOME" -metadata service_name="IPTV" -muxrate 10M -f mpegts -y tspipe | sudo ./tsrfsend tspipe 0 578000 8000 4 1/2 1/4 8 0 0
  
  
  
  [cli][info] Found matching plugin zattoo for URL https://zattoo.com/watch/orf-2
  
  [cli][info] Available streams: 600k_alt (worst), 600k, 900k, 1500k (best)
  
  [cli][info] Opening stream: 1500k (hls)
  
  Input #0, mpegts, from 'pipe:0':
  
    Duration: N/A, start: 45236.000000, bitrate: N/A
  
    Program 1
  
      Stream #0:0[0x100]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(progressive), 768x432 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Stream #0:1[0x101]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 128 kb/s
  
  
  
  Open /dev/usb-it950x0 ok
  
  g_ITEAPI_TxDeviceInit ok
  
  1 Devices
  
  g_ITEAPI_GetDrvInfo ok
  
  DriverInfo.DriverVerion  = v16.11.10.1
  
  DriverInfo.APIVerion     = 1.3.20160929.0
  
  DriverInfo.FWVerionLink  = 255.39.2.0
  
  DriverInfo.FWVerionOFDM  = 255.9.11.0
  
  DriverInfo.Company       = ITEtech
  
  DriverInfo.SupportHWInfo = Eagle DVBT
  
  DriverInfo.ProductID     = 0x9507
  
  Frequency = 578000 KHz
  
  Bandwidth = 8000 MHz
  
  Constellation: QPSK
  
  Code Rate: 1/2
  
  Interval: 1/4
  
  Transmission Mode: 8K
  
  Output #0, mpegts, to 'tspipe':
  
    Metadata:
  
      service_provider: HOME
  
      service_name    : IPTV
  
      encoder         : Lavf57.56.101
  
      Stream #0:0: Video: mpeg2video (Main), yuv420p, 720x576 [SAR 64:45 DAR 16:9], q=2-31, 10000 kb/s, 30 fps, 90k tbn, 30 tbc
  
      Metadata:
  
        encoder         : Lavc57.64.101 mpeg2video
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/10000000 buffer size: 0 vbv_delay: -1
  
      Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 64 kb/s
  
      Metadata:
  
        encoder         : Lavc57.64.101 mp2
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> mpeg2video (native))
  
    Stream #0:1 -> #0:1 (aac (native) -> mp2 (native))
  
  Channel Capacity is 4976172 bps
  
  MinGain: -52, MaxGain: 5
  
  frame=    3 fps=0.0 q=2.0 size=      63kB time=00:00:00.38 bitrate=1337.3kbits/s

  Tsrfsend is the application that sends the generated ts stream over a named pipe to the USB modulator.

  I also tried various audio bitrates such as 64, 192, 384k but all is very similar.

• Codec h264_cuvid is not supported

  9 septembre 2019, par gn cavalry

  ======================= Environment =======================
  System : ubuntu 18.04
  Architecture : x86_64
  Display Card : NVIDIA GeForce 820m
  Display Card Driver : NVIDIA-Linux-x86_64-390.87
  gcc : 6.5.0
  CUDA : 9.1.85 (also tried 9.0.176)
  FFmpeg : 3.4 (also tried 4.0, 4.1)

  ==================== FFmpeg Compilation ====================

  ./configure \
  
    --prefix="$DIR_BUILD" \
  
    --bindir="$DIR_BIN" \
  
    --enable-cuda \
  
    --enable-cuvid \
  
    --enable-nvenc \
  
    --enable-nonfree \
  
    --enable-libnpp \
  
    --extra-cflags=-I/usr/local/cuda/include \
  
    --extra-ldflags=-L/usr/local/cuda/lib64

  ======================= Verification =======================
  Driver Verification :
  (I have downgrade my gcc from 7.3 to 6.5, I don’t know why there still shows gcc version 7.3)

  $ cat /proc/driver/nvidia/version
  
  NVRM version: NVIDIA UNIX x86_64 Kernel Module  390.87  Tue Aug 21 12:33:05 PDT 2018
  
  GCC version:  gcc version 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04)

  CUDA Verification :

  $nvcc -V
  
  nvcc: NVIDIA (R) Cuda compiler driver
  
  Copyright (c) 2005-2017 NVIDIA Corporation
  
  Built on Fri_Nov__3_21:07:56_CDT_2017
  
  Cuda compilation tools, release 9.1, V9.1.85
  
  
  
  $./deviceQuery
  
  Rsult = PASS
  
  
  
  $./bandwidthTest
  
  Result = PASS

  FFmpeg Decoder Verification :

  $ ffmpeg -codecs | grep cuvid
  
  ffmpeg version 3.4.5 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 6.5.0 (Ubuntu 6.5.0-2ubuntu1~18.04) 20181026
  
    configuration: --prefix=/home/cavalry/Downloads/compile_ffmpeg/ffmpeg_build --bindir=/home/cavalry/Downloads/compile_ffmpeg/bin --enable-cuda --enable-cuvid --enable-nvenc --enable-nonfree --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
   DEV.LS h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_v4l2m2m h264_vdpau h264_cuvid ) (encoders: h264_nvenc h264_v4l2m2m h264_vaapi nvenc nvenc_h264 )
  
   DEV.L. hevc                 H.265 / HEVC (High Efficiency Video Coding) (decoders: hevc hevc_cuvid ) (encoders: nvenc_hevc hevc_nvenc hevc_vaapi )
  
   DEVIL. mjpeg                Motion JPEG (decoders: mjpeg mjpeg_cuvid ) (encoders: mjpeg mjpeg_vaapi )
  
   DEV.L. mpeg1video           MPEG-1 video (decoders: mpeg1video mpeg1video_vdpau mpeg1_v4l2m2m mpeg1_cuvid )
  
   DEV.L. mpeg2video           MPEG-2 video (decoders: mpeg2video mpegvideo mpegvideo_vdpau mpeg2_v4l2m2m mpeg2_cuvid ) (encoders: mpeg2video mpeg2_vaapi )
  
   DEV.L. mpeg4                MPEG-4 part 2 (decoders: mpeg4 mpeg4_v4l2m2m mpeg4_vdpau mpeg4_cuvid ) (encoders: mpeg4 mpeg4_v4l2m2m )
  
   D.V.L. vc1                  SMPTE VC-1 (decoders: vc1 vc1_vdpau vc1_v4l2m2m vc1_cuvid )
  
   DEV.L. vp8                  On2 VP8 (decoders: vp8 vp8_v4l2m2m vp8_cuvid ) (encoders: vp8_v4l2m2m vp8_vaapi )
  
   DEV.L. vp9                  Google VP9 (decoders: vp9 vp9_v4l2m2m vp9_cuvid ) (encoders: vp9_vaapi )

  FFmpeg Encoder Verification :

  $ ffmpeg -codecs | grep nvenc 
  
  ffmpeg version 3.4.5 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 6.5.0 (Ubuntu 6.5.0-2ubuntu1~18.04) 20181026
  
    configuration: --prefix=/home/cavalry/Downloads/compile_ffmpeg/ffmpeg_build --bindir=/home/cavalry/Downloads/compile_ffmpeg/bin --enable-cuda --enable-cuvid --enable-nvenc --enable-nonfree --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
   DEV.LS h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_v4l2m2m h264_vdpau h264_cuvid ) (encoders: h264_nvenc h264_v4l2m2m h264_vaapi nvenc nvenc_h264 )
  
   DEV.L. hevc                 H.265 / HEVC (High Efficiency Video Coding) (decoders: hevc hevc_cuvid ) (encoders: nvenc_hevc hevc_nvenc hevc_vaapi )

  ================== Exec ffmepg command line ===================

  All things seem goes right, then I executed the following command :
  ffmpeg -c:v h264_cuvid -i ./holidy.mp4 output.mkv
  But it turns out :
  [h264_cuvid @ 0x55f93a512200] Codec h264_cuvid is not supported.

  Here is the whole information :

  $ ffmpeg -c:v h264_cuvid -i ./holidy.mp4 output.mkv
  
  ffmpeg version 3.4.5 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 6.5.0 (Ubuntu 6.5.0-2ubuntu1~18.04) 20181026
  
    configuration: --prefix=/home/cavalry/Downloads/compile_ffmpeg/ffmpeg_build --bindir=/home/cavalry/Downloads/compile_ffmpeg/bin --enable-cuda --enable-cuvid --enable-nvenc --enable-nonfree --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './holidy.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 1
  
      compatible_brands: isomavc1iso6
  
      creation_time   : 2018-01-29T09:18:23.000000Z
  
      album           : Yinyuetai
  
      artist          : yinyuetai.com
  
      comment         : Yinyuetai-1TR1166
  
      date            : 01/29/18 17:18:23
  
    Duration: 00:04:15.21, start: 0.000000, bitrate: 4210 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 4087 kb/s, 24 fps, 24 tbr, 24k tbn, 48 tbc (default)
  
      Metadata:
  
        creation_time   : 2018-01-29T09:18:23.000000Z
  
        handler_name    : 264@GPAC0.5.1-DEV-rev5472
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 120 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-01-29T09:17:31.000000Z
  
        handler_name    : Sound Media Handler
  
  [h264_cuvid @ 0x55f3e05ca1c0] Codec h264_cuvid is not supported.
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (h264_cuvid) -> mpeg4 (native))
  
    Stream #0:1 -> #0:1 (aac (native) -> ac3 (native))
  
  Error while opening decoder for input stream #0:0 : Invalid argument

  I have tried width CUDA9.0, CUDA9.1, FFmpeg3.4, FFmpeg4.0, FFmpeg 4.1, but it reports the same error. Can anyone help me ? I will appreciate you greatly !