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• How should I make ffmpeg "-ignore_unknown" work ?

  10 janvier 2024, par living being

  I'm batch-converting some videos and I want ffmpeg to just drop any unknown stream instead of failing and leaving the video untouched.

  


  My code :

  


  find ./ -type f -iname '*.mp4' -exec bash -c 'var="{}" && ffmpeg -i "{}" -map 0 -vcodec libx265 -preset fast -crf 31 -vf "scale=-2:min(1080\,ih)" -acodec libopus -ac 1 -b:a 24K -c:s copy -ignore_unknown "$var.mp4" -y && rm -v "$var" && mv -- "$var.mp4" "$var"' \;


  


  streams :

  


  Stream #0:0[0x1](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 105 kb/s (default)
Metadata:
  creation_time   : 2012-02-07T06:23:20.000000Z
  handler_name    : Apple Sound Media Handler
  vendor_id       : [0][0][0][0]
Stream #0:1[0x2](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709, progressive), 320x240, 491 kb/s, 30.12 fps, 30.12 tbr, 2500 tbn (default)
Metadata:
  creation_time   : 2012-02-07T06:23:20.000000Z
  handler_name    : Apple Video Media Handler
  vendor_id       : [0][0][0][0]
  Stream #0:2[0x3](eng): Data: none (rtp  / 0x20707472), 511 kb/s
Metadata:
  creation_time   : 2012-02-07T06:23:20.000000Z
  handler_name    : hint media handler
Stream #0:3[0x4](eng): Data: none (rtp  / 0x20707472), 109 kb/s
Metadata:
  creation_time   : 2012-02-07T06:23:20.000000Z
  handler_name    : hint media handler
Stream mapping:
Stream #0:0 -> #0:0 (aac (native) -> opus (libopus))
Stream #0:1 -> #0:1 (h264 (native) -> hevc (libx265))
Stream #0:2 -> #0:2 (copy)
Stream #0:3 -> #0:3 (copy)


  


  In the end I get this :

  


  [mp4 @ 0x55f412caa240] Could not find tag for codec none in stream #2, codec not currently supported in container
[out#0/mp4 @ 0x55f412c97ec0] Could not write header (incorrect codec parameters ?): Invalid argument
[vost#0:1/libx265 @ 0x55f412ec3d00] Error initializing output stream: 
[libopus @ 0x55f412ec3200] 1 frames left in the queue on closing

encoded 0 frames
Conversion failed!


  


  

  


  OS : Ubuntu 23.10

  


  I know I can do it by eliminating "-map 0", but I want to include all subtitle streams and other types of known streams if any. I need to use this for terabytes of videos, so I can't totally exclude data streams either, since there are some useful ones.

  


• network : prevent SIGPIPE on OSX

  30 mai 2015, par wm4

  network : prevent SIGPIPE on OSX
  OSX does not know MSG_NOSIGNAL, and provides its own non-standard
  
  mechanism instead. I guess Apple hates standards.
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavformat/network.c

• ffmpeg hevc + hls + fmp4 not working in safari ?

  25 août 2022, par S.N.

  ffmpeg : 5.1,
mac os safari : 15.6.1 (the latest)

  


  mime types :

  


  m4s : application/octet-stream ;
mp4 : video/mp4 ;
m3u8 : application/vnd.apple.mpegurl ;

  


  command line :
ffmpeg -i input.mpeg -c:v libx265 -tag:v hvc1 -an -g 48 -r 24 -f hls -hls_time 2 -hls_playlist_type vod -hls_flags independent_segments -hls_segment_type fmp4 output.m3u8

  


  The output m3u8 file works fine in VLC/MPV player, but not working in macos/ios Safari, any ideas ?

  


  thanks !