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• Video ; Zoom to different points with a single render (?)

  31 mai 2021, par RewossKy

  Based on 16 seconds, I want the codes to zoom to the top left for the first 4 seconds, to the bottom left for the next 4 seconds, to the top right for the next 4 seconds, and then to the bottom right for 4 seconds.

  


  Structurally, the codes are ready, but I need small details, I want to render them in one go (without rendering 4 times) and focus every 4 seconds elsewhere.

  


  If you can help me I would be very happy. I couldn't figure it out for days.

  


  'Top left
ffmpeg -y -i input.mp4 -vf "zoompan=z='if(lte(mod(time,16),4),2,1.05)':d=1:x=iw/3-(iw/zoom/2):y=ih/3-(ih/zoom/2):fps=29.97" output.mp4

  


  Top right
ffmpeg -y -i input.mp4 -vf "zoompan=z='if(lte(mod(time,16),4),2,1.05)':d=1:x=iw/1-(iw/zoom/2):y=ih/3-(ih/zoom/2):fps=29.97" output.mp4

  


  Bottom left
ffmpeg -y -i input.mp4 -vf "zoompan=z='if(lte(mod(time,16),4),2,1.05)':d=1:x=iw/2-(iw/zoom/1):y=ih/1-(ih/zoom/1):fps=29.97" output.mp4

  


  Bottom right
ffmpeg -y -i input.mp4 -vf "zoompan=z='if(lte(mod(time,16),4),2,1.05)':d=1:x=iw/1-(iw/zoom/2):y=ih/1-(ih/zoom/2):fps=29.97" output.mp4'

  


• Convert MP4 File to M3U8(only m3u8 file No ts file) [closed]

  28 février 2024, par Ayan Ansari

  I'm a beginner working on a content streaming app (like Netflix) where i want to add feature of quality control of the content (like switch to 480p, 720p, 1080p etc). I'm using Exoplayer for video player and the app is almost ready. But the problem i've been facing is that all the files are either mp4, mkv etc file but i need m3u8 file. So I tried converting video using FFmpeg tools which worked but it gives me LOTS OF TS file which i need to upload along with the m3u8 file. After doing some more research i was able to reduce it to 1 m3u8 and 1 TS file. Is it possible to Create only 1 m3u8 file no TS file ? Here are what i've tried.

  


  ffmpeg -i input.mp4 -c:a aac -strict -2 -c:v libx264 -preset ultrafast -crf 28 -maxrate 2M -bufsize 4M
-hls_time 6 -hls_playlist_type vod -hls_flags single_file -f hls output.m3u8


  


  I also thought i will upload all the video in different quality manually, but as a broke 17 Y/O teenager, noobie who don't know how to use AWS or cloud Servers and also AWS or Google Cloud doesn't accept Indian Debit Card(Rupay) for free trial.
Please also suggest some where i can store these data for free i guess( i don't care about where i upload, i just need the link which i can put in my database.)
Thank You :)

  


• lavfi/qsvvpp : avoid overriding the returned value

  28 novembre 2022, par Haihao Xiang

  lavfi/qsvvpp : avoid overriding the returned value
  It means more than one output is ready when
  
  MFXVideoVPP_RunFrameVPPAsync() returns MFX_ERR_MORE_SURFACE [1].
  
  Currently the returned value from MFXVideoVPP_RunFrameVPPAsync() might
  
  be overridden, so the check of 'ret == MFX_ERR_MORE_SURFACE' is always
  
  false when MFX_ERR_MORE_SURFACE is returned from
  
  MFXVideoVPP_RunFrameVPPAsync()
  [1] https://github.com/Intel-Media-SDK/MediaSDK/blob/master/doc/mediasdk-man.md#video-processing-procedures
  Signed-off-by : Haihao Xiang <haihao.xiang@intel.com>
  

  • [DH] libavfilter/qsvvpp.c