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• ffmpeg : Extract unknown data stream from video container

  23 juillet 2020, par Pikkostack

  I have a .MOV container which contains the following tracks :

  


  Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 100619 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
Metadata:
  creation_time   : 2020-07-21T22:48:24.000000Z
  handler_name    : DJI.AVC
  encoder         : AVC encoder
Stream #0:1(eng): Data: none (priv / 0x76697270), 87 kb/s
Metadata:
  creation_time   : 2020-07-21T22:48:24.000000Z
  handler_name    : DJI.Meta
Stream #0:2(eng): Subtitle: mov_text (text / 0x74786574), 2 kb/s (default)
Metadata:
  creation_time   : 2020-07-21T22:48:24.000000Z
  handler_name    : DJI.Subtitle


  


  As you can see, stream #0:1, called DJI.meta, is of an unknown data format. I just want to extract the raw data of this stream to a file. So that is the ffmpeg command I tried :

  


  ffmpeg -i .\DJI_0001.MOV -map 0:1 metadata


  


  But using this command results in the following error :

  


  Unable to find a suitable output format for 'metadata'
metadata: Invalid argument


  


  How can I tell ffmpeg that the data should not be formated, so that only the raw data is extracted ?

  


• ffmpeg, lower fps with gpu - too many packets buffered

  29 mai 2020, par Alter

  I'm trying to lower the fps for a large set of videos. Unfortunately, I don't have much experience with ffmpeg

  



  This is my current command, which is a hybrid of multiple posts. At this point it's more guess work than anything else

  



  ffmpeg \
  -y -hwaccel_output_format cuda -hwaccel_device 0 -hwaccel cuvid -c:v mpeg2_cuvid \
  -i myinput.mp4 -r 25 -c:v hevc_nvenc-b:v 128K -strict -2 -movflags faststart \ 
  /workspace/videos/24fps_trial2/rat1-control2.mp4 -c:v hevc_nvenc


  



  The gist of it is just that I'm trying to lower fps and use hardware acceleration since my dataset is large

  



  The message I get is

  



  Trailing option(s) found in the command: may be ignored.
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x453a100] decoding for stream 0 failed
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x453a100] Could not find codec parameters for stream 0 (Video: mpeg2video (hvc1 / 0x31637668), none(tv), 2704x1520, 59946 kb/s): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/workspace/gs/Rat Controls Jan 2020 /Rat 1 Control 2 .MP4':
  Metadata:
    major_brand     : mp41
    minor_version   : 538120216
    compatible_brands: mp41
    creation_time   : 2020-01-07T09:45:34.000000Z
    firmware        : HD7.01.01.70.00
  Duration: 00:01:49.63, start: 0.000000, bitrate: 60202 kb/s
    Stream #0:0(eng): Video: mpeg2video (hvc1 / 0x31637668), none(tv), 2704x1520, 59946 kb/s, 119.88 fps, 119.88 tbr, 120k tbn, 120k tbc (default)
    Metadata:
      creation_time   : 2020-01-07T09:45:34.000000Z
      handler_name    : GoPro H.265
      encoder         : GoPro H.265 encoder
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
    Metadata:
      creation_time   : 2020-01-07T09:45:34.000000Z
      handler_name    : GoPro AAC
    Stream #0:2(eng): Data: bin_data (gpmd / 0x646D7067), 29 kb/s (default)
    Metadata:
      creation_time   : 2020-01-07T09:45:34.000000Z
      handler_name    : GoPro MET
    Stream #0:3(eng): Data: none (fdsc / 0x63736466), 21 kb/s (default)
    Metadata:
      creation_time   : 2020-01-07T09:45:34.000000Z
      handler_name    : GoPro SOS
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg2video (mpeg2_cuvid) -> hevc (hevc_nvenc))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
Too many packets buffered for output stream 0:1.
[aac @ 0x45bf880] Qavg: 746.362
[aac @ 0x45bf880] 2 frames left in the queue on closing
Conversion failed!



  


• ffmpeg Live Streaming Error : av_interleaved_write_frame() : Broken pipe

  5 octobre 2022, par Krishnakumar

  I am trying to stream video live using ffmpeg, Input is from a UDP Source. Most of the time it works fine, but I could see the following log lines and ffmpeg stop's the conversion/feed push to the rtmp server. Few log lines below for reference. Is this issue related to network on reaching the destination or source or something that i need to change in the ffmpeg command ?

  



  Wed Jun 17 07:53:22 2020 av_interleaved_write_frame(): Broken pipe
Wed Jun 17 07:53:48 2020     Last message repeated 1 times
Wed Jun 17 07:53:48 2020 av_interleaved_write_frame(): End of file
Wed Jun 17 07:53:49 2020     Last message repeated 1 times
Wed Jun 17 07:53:49 2020 [flv @ 0x40c87c0] Failed to update header with correct duration.
Wed Jun 17 07:53:49 2020 [flv @ 0x40c87c0] Failed to update header with correct filesize.
Wed Jun 17 07:53:49 2020 Error writing trailer of rtmp://ipaddress:1935/rtmp/push/test1: Broken pipe
Wed Jun 17 07:53:49 2020 [flv @ 0x48fe140] Failed to update header with correct duration.
Wed Jun 17 07:53:49 2020 [flv @ 0x48fe140] Failed to update header with correct filesize.
Wed Jun 17 07:53:49 2020 Error writing trailer of rtmp://ipaddress:1935/rtmp/push/test2: Broken pipe
Wed Jun 17 07:53:49 2020 [flv @ 0x4ccb5c0] Failed to update header with correct duration.
Wed Jun 17 07:53:49 2020 [flv @ 0x4ccb5c0] Failed to update header with correct filesize.
Wed Jun 17 07:53:49 2020 Error writing trailer of rtmp://ipaddress:1935/rtmp/push/test3: End of file
Wed Jun 17 07:53:49 2020 [flv @ 0x4725840] Failed to update header with correct duration.
Wed Jun 17 07:53:49 2020 [flv @ 0x4725840] Failed to update header with correct filesize.
Wed Jun 17 07:53:49 2020 Error writing trailer of rtmp://ipaddress:1935/rtmp/push/test4: Broken pipe
Wed Jun 17 07:53:49 2020 video:10594389kB audio:678081kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Wed Jun 17 07:53:49 2020 [libx264 @ 0x410c540] frame I:12400 Avg QP:19.58  size: 11797
Wed Jun 17 07:53:49 2020 [libx264 @ 0x410c540] frame P:359585 Avg QP:23.19  size:  1317


  



  Adding the ffmpeg command below :

  



  ffmpeg -err_detect aggressive -fflags discardcorrupt -i udp://230.1.1.2:11000?fifo_size=5000000&overrun_nonfatal=1 -analyzeduration 25M -probesize 50M -threads 0 -vsync 1 -filter_complex [i:0x202]yadif,setdar=16/9[1out1];[i:0x202]yadif,setdar=16/9[1out2];[i:0x202]yadif,setdar=16/9[1out3];[i:0x202]yadif,setdar=16/9[1out4] -map [1out1] -map i:0x29e -c:v libx264 -x264-params nal-hrd=cbr -b:v 200k -maxrate 200k -bufsize 300k -r 15 -g 30 -profile:v baseline -level 3.0 -pix_fmt yuv420p -c:a libfdk_aac -b:a 32k -ac 2 -ar 48000 -sc_threshold 0 -s 256x144 -tune film -af aresample=async=1:min_hard_comp=0.100000:first_pts=0 -x264opts opencl -f flv rtmp://ipaddress:1935/rtmp/push/test1-map [1out2] -map i:0x29e -c:v libx264 -x264-params nal-hrd=cbr -b:v 500k -maxrate 500k -bufsize 750k -r 25 -g 50 -profile:v baseline -level 3.0 -pix_fmt yuv420p -c:a libfdk_aac -b:a 64k -ac 2 -ar 48000 -sc_threshold 0 -s 512x288 -tune film -af aresample=async=1:min_hard_comp=0.100000:first_pts=0 -x264opts opencl -f flv rtmp://ipaddress:1935/rtmp/push/test2 -map [1out3] -map i:0x29e -c:v libx264 -x264-params nal-hrd=cbr -b:v 1000k -maxrate 1000k -bufsize 1500k -r 25 -g 50 -profile:v main -level 3.0 -pix_fmt yuv420p -c:a libfdk_aac -b:a 64k -ac 2 -ar 48000 -sc_threshold 0 -s 1024x576 -tune film -af aresample=async=1:min_hard_comp=0.100000:first_pts=0 -x264opts opencl -f flv rtmp://ipaddress:1935/rtmp/push/test3 -map [1out4] -map i:0x29e -c:v libx264 -x264-params nal-hrd=cbr -b:v 1800k -maxrate 1800k -bufsize 2700k -r 25 -g 50 -profile:v main -level 3.1 -pix_fmt yuv420p -c:a libfdk_aac -b:a 64k -ac 2 -ar 48000 -sc_threshold 0 -s 1280x720 -tune film -af aresample=async=1:min_hard_comp=0.100000:first_pts=0 -x264opts opencl -f flv rtmp://ipaddress:1935/rtmp/push/test4