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• Revision 86691 : icône superflue : revert de r86684

  12 décembre 2014, par tcharlss@… — Log

  icône superflue : revert de r86684

• FFMPEG screen grab of windows desktop and then exporting to multiple bandwidth ts and m3u8 files with master playlist

  26 juillet 2018, par Tank Daniels

  Forgive me as this is my first post as I’m really stuck and need help. My boss needs me to screen capture a windows desktop as input and be able to output at least four outputs dependent on bandwidth. Each output "Stream"(im guessing is the right terminology) must have its own .ts files and .m3u8 files, along with a master m3u8 playlist that lists the four individual m3u8 files.

  Every attempt ive made only produces a master m3u8 file with a single listing of an output stream. (Code enclosed below).

  The end result I need to produce is to have a master m3u8 that can go into a webpage that can stream mp4 hls of the users screen grab and that video output will be changed dependant upon the users bandwidth available. If you can please help me with any advice I will be eternally grateful as I need to impress my new boss in my new job, and I’ve been working on this for ages now with no joy.

  Example :
  This is what I need it to look like.

  What the M3U8 needs to look like

  Example :
  This is what it actually looks like now.

  What the current M3U8 actually looks like when i run my code

  Below is the code I am currently using. Please help.

  ffmpeg -f dshow -i video="UScreenCapture":audio="virtual-audio-capturer" -master_pl_name master.m3u8 -master_pl_publish_rate 30 -tune fastdecode -vf scale=w=640:h=360:force_original_aspect_ratio=decrease -c:a aac -ar 48000 -c:v h264 -crf 20 -sc_threshold 0 -g 48 -keyint_min 48 -hls_time 4 -hls_playlist_type vod  -b:v 800k -maxrate 856k -bufsize 1200k -b:a 96k -hls_segment_filename 360p_%03d.ts 360p.m3u8 -master_pl_name master.m3u8 -master_pl_publish_rate 30 -vf scale=w=842:h=480:force_original_aspect_ratio=decrease -c:a aac -ar 48000 -c:v h264 -crf 20 -sc_threshold 0 -g 48 -keyint_min 48 -hls_time 4 -hls_playlist_type vod -b:v 1400k -maxrate 1498k -bufsize 2100k -b:a 128k -hls_segment_filename 480p_%03d.ts 480p.m3u8 -master_pl_name master.m3u8 -master_pl_publish_rate 30 -vf scale=w=1280:h=720:force_original_aspect_ratio=decrease -c:a aac -ar 48000 -c:v h264 -crf 20 -sc_threshold 0 -g 48 -keyint_min 48 -hls_time 4 -hls_playlist_type vod -b:v 2800k -maxrate 2996k -bufsize 4200k -b:a 128k -hls_segment_filename 720p_%03d.ts 720p.m3u8 -master_pl_name master.m3u8 -master_pl_publish_rate 30 -vf scale=w=1920:h=1080:force_original_aspect_ratio=decrease -c:a aac -ar 48000 -c:v h264 -crf 20 -sc_threshold 0 -g 48 -keyint_min 48 -hls_time 4 -hls_playlist_type vod -b:v 5000k -maxrate 5350k -bufsize 7500k -b:a 192k -hls_segment_filename 1080p_%03d.ts 1080p.m3u8

  Many Thanks for looking. Chris.

• flac/encode.c : Fix an integer overflow

  14 février 2017, par Erik de Castro Lopo

  flac/encode.c : Fix an integer overflow
  When encoding a 24 bit multichannel W64 file on a 32 bit system, a
  
  calculation could overflow resulting in a "got partial sample"
  
  error and early termination of the encoding process.
  The fix was to replace the cast to `size_t` (which is only 32 bits
  
  on a 32 bit system) with a cast to `uin64_t`.
  Thanks to Janne Hyvärinen for helping to track down the problem.
  Closes : https://sourceforge.net/p/flac/bugs/453
  

  • [DH] src/flac/encode.c