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• swscale/rgb2xyz : add explicit width parameter

  7 octobre 2024, par Niklas Haas

  swscale/rgb2xyz : add explicit width parameter
  This fixes an 11-year-old bug in the rgb2xyz functions, when used with a
  
  negative stride. The current loop bounds turned it into a no-op.
  Additionally, this increases performance on highly cropped images, whose
  
  stride may be substantially higher than the effective width.
  Sponsored-by : Sovereign Tech Fund
  
  Signed-off-by : Niklas Haas <git@haasn.dev>
  

  • [DH] libswscale/swscale.c
  • [DH] tests/ref/fate/filter-pixfmts-vflip

• how to stop the FFmpeg process programmatically without using Ctrl + C ?

  30 septembre 2024, par bee

  const shell = require("shelljs");

const processShell = shell.exec(
  `ffmpeg -i "https://pull-hls-f16-va01.tiktokcdn.com/game/stream-2998228870023348312_or4/index.m3u8?expire=1728629296&session_id=000-2024092706481532076B1319E1100113F8&sign=1016b521d08053bc0ae8eddb0881b029" -movflags use_metadata_tags -map_metadata 0 -metadata title="Chill chill kiß║┐m k├¿o Warthunder" -metadata artist="bacgaucam" -metadata year="2024" -c copy "downloads/bacgaucam-927202491939.mp4" -n -stats -hide_banner -loglevel error`,
  { async: true }
);

setTimeout(() => {
  // processShell.kill();
  process.exit();
}, 20000);


  


  my video only works when I use Ctrl+C to stop it. I’ve tried using process.exit(), .kill(pid, "SIGINT"), and the .kill() method from the shell.exec() ffmpeg() of fluent-ffmpeg or spawn() of child_process reference, but none of them work

  


  If you want to test it directly, please message me to get a new live url in case it expires (https://t.me/ppnam15) or clone this :
https://github.com/loo-kuhs/tiktok-live-downloader

  


  can anyone help ? Thanks !

  


• How to recover video from H264 frames and timestamps [closed]

  10 juin 2024, par kokosda

  My service receives H264 frames and some metadata related to them like Timestamp from MS Teams.

  


  Observations :

  


  

  • Those frames are inter-frame compressed.

  


  • Resolution of those frames can change.

  


  • Timestamps are like this one 39264692280552704. That represents year 125 if fed to .NET consturctor new DateTime(39264692280552704), so I need to add 1899 years to get a real date.

  


  • I can wrap the sequence to a playable mp4 container with ffmpeg -i input.h264 -c copy output.mp4, however it is not what I want because the resulting video plays too fast, like on fast forward. Thus, I would like those timestamps would be considered to recover a real timeline.

  


  


  I merged all the H264 frames in one file like input.h264 and saved all the timestamps in another file like metadata.json. In metadata.json, each object describes a single frame from input.h264.

  


  My question is how to recover the source video from frames and timestamps that I received from Teams ? Particularly, using FFMPEG.