Recherche avancée

Sur d’autres sites (6415)

• What is the purpose of CHAPTER END in video metadata ?

  20 décembre 2022, par Cypc

  I am learning how to use ffmpeg to add chapters to fairly long recordings as a mean of remembering key timestamps.
After a successful test I got my chapters showing in VLC as little marks on the time bar and in chapter menu, but those marks correspond to START time obviously.

  


  So what is the purpose of END time ? It does not seem to do anything in VLC, is it important to have a chapter starting at the start of the video and one ending at the end of the video ? Is it important to have each chapter end when the next one starts ?

  


  [CHAPTER]
TIMEBASE=1/1
START=1
END=600
title=Chapter


  


• ffmpeg : "Referenced QT chapter track not found"

  29 avril 2019, par Ze'ev

  Using ffmpeg to replace audio in a QuickTime with audio from a WAV.

  Anyone know why I’m getting Referenced QT chapter track not found ?

  Command :

  $ ffmpeg \
-i "$video" -t 25 \
-i "$audio" -map 0:v -c:v copy -map 1:a -c:a pcm_s24le -ar 48000 \
-hide_banner "$output"

  Output :

  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7faf62010600] Referenced QT chapter track not found
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mov':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 537199360
  
      compatible_brands: qt
  
      creation_time   : 2018-11-06T09:27:43.000000Z
  
    Duration: 00:00:25.00, start: 0.000000, bitrate: 186987 kb/s
  
      Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le(bt709, progressive), 1920x1080, 185115 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
  
      Metadata:
  
        creation_time   : 2018-11-06T09:27:43.000000Z
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : Apple ProRes 422 (HQ)
  
        timecode        : 00:00:00:00
  
      Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-11-06T09:27:43.000000Z
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:00:00:00
  
      Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-11-06T09:27:43.000000Z
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:00:00:00
  
  Guessed Channel Layout for Input Stream #1.0 : stereo
  
  Input #1, wav, from 'audio.wav':
  
    Metadata:
  
      encoded_by      : Pro Tools
  
      originator_reference: aaOpKJaTN7Nk
  
      date            : 2018-11-08
  
      creation_time   : 13:53:50
  
      time_reference  : 166698000
  
    Duration: 00:00:25.00, bitrate: 2128 kb/s
  
      Stream #1:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s32 (24 bit), 2116 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #1:0 -> #0:1 (pcm_s24le (native) -> pcm_s24le (native))
  
  Press [q] to stop, [?] for help
  
  Output #0, mov, to 'test19.mov':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 537199360
  
      compatible_brands: qt
  
      encoder         : Lavf58.12.100
  
      Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le(bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 185115 kb/s, 0.04 fps, 25 tbr, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        creation_time   : 2018-11-06T09:27:43.000000Z
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : Apple ProRes 422 (HQ)
  
        timecode        : 00:00:00:00
  
      Stream #0:1: Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s
  
      Metadata:
  
        encoder         : Lavc58.18.100 pcm_s24le
  
  frame=  625 fps=277 q=-1.0 Lsize=  566343kB time=00:00:24.96 bitrate=185876.0kbits/s speed=11.1x
  
  video:564928kB audio:1406kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.001496%

  Same error with -map 0:v:0

• Ffmpeg : copy chapter and remove tags mkv files

  15 décembre 2018, par Chris

  I’m working with MKV files only. When I convert from original to target, video and audio works 100%. I however have issues copying the Chapters too, sometimes it works, other times not. The output file also contains 3 Tags I need to get rid of :

  Using MKVToolsNiX to check Output file :

  1. Entry - Global Tags
  2. Entries - Tags
  3. Entries - Tags

  My commandline looks like this :

  -map_metadata -1 -map 0:0 -map 0:1 -metadata:s:a:0 language=eng -metadata:s:v:0 language=eng -metadata:s:s:0 language=eng -c:v libx264 -s 1280x720 -pix_fmt yuv420p -b:v 2500k -r 30 -c:a ac3 -b:a 320k -ar 48000 -ac 6 -y

  Any help will be appreciated.

  Chris