Recherche avancée

Sur d’autres sites (12982)

• Dolby Vision Mp4 to HLS Stream

  23 avril 2022, par goodkid38

  Is it possible to create a dolby vision HLS stream with ffmpeg ? I have tried online tutorials such as this one https://codecalamity.com/encoding-uhd-4k-hdr10-videos-with-ffmpeg/#saving-dolby-vision but I have not seen any success. I either get hevc files with no dv from tsmuxer, invalid rpu files or the Skipping NAL unit 63 message from ffmpeg. Here is the current ffmpeg command I'm testing to at least get an hevc with dolby vision

  


  ffmpeg -i input.mp4 -c:v copy -f hevc - | dovi_tool extract-rpu --rpu-out input.rpu - | x265-10b - --input-depth 10 --output-depth 10 --y4m --preset veryfast --crf 22 --master-display "G(8500,39850)B(6550,2300)R(35400,14600)WP(15635,16450)L(40000000,50)" --max-cll "0,0" --colormatrix bt2020nc --colorprim bt2020 --transfer smpte2084 --dolby-vision-rpu input.rpu --dolby-vision-profile 8.1 --vbv-bufsize 20000 --vbv-maxrate 20000 output.hevc 


  


  I have also tried with dovi_tool like so

  


  ffmpeg -i nameofmovie.mp4 -f yuv4mpegpipe -strict -1 -pix_fmt yuv420p10le - | x265-10b - --input-depth 10 --output-depth 10 --y4m --preset veryfast --crf 22 --master-display "G(8500,39850)B(6550,2300)R(35400,14600)WP(15635,16450)L(40000000,50)" --max-cll "0,0" --colormatrix bt2020nc --colorprim bt2020 --transfer smpte2084 --dolby-vision-rpu input.rpu --dolby-vision-profile 8.1 --vbv-bufsize 20000 --vbv-maxrate 20000 output.hevc


  


  Which gives me this error :

  


  [hevc @ 000002f047aaf1c0] Skipping NAL unit 63
    Last message repeated 1 times
av_interleaved_write_frame(): Invalid argument
Error writing trailer of pipe:: Invalid argument00:00:00.04 bitrate=4772857.0kbits/s speed=0.297x
frame=    1 fps=0.0 q=-0.0 Lsize=   24300kB time=00:00:00.04 bitrate=4772857.0kbits/s speed=0.261x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5271783.500000%
Error closing file pipe:: Invalid argument
[hevc @ 000002f047cc0b80] Skipping NAL unit 63
    Last message repeated 8 times
[hevc @ 000002f047a23dc0] Skipping NAL unit 63
    Last message repeated 1 times
[hevc @ 000002f0480be640] Skipping NAL unit 63
    Last message repeated 1 times
Conversion failed!


  


  Theoretically I'd like to go from mkv straight to HLS with dolby vision but that seems to be even more problematic.

  


  Any suggestions ?

  


• Core : Improve elementValue method

  31 mars 2014, par staabm

  Core : Improve elementValue method
  Do not rewrap several times. Call .val() only when required.
  Closes #1055
  

• Get_iplayer not converting to MP4 [closed]

  16 juin 2022, par PhilDunford

  get_iplayer

  


  I know that this is an old piece of code, but it still does a great job.

  


  In the last week or so it's stopped converting the .ts files to .mp4. I've seem this mentioned elsewhere, but no solution. I think the key line among many error messages may be 'unable to determine ffmpeg version'.

  


  I assume the BBC has done something to break it (this has happened many times before).

  


  Needs someone much cleverer than me to fix it. Does anyone still update the code or know a work around ?