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• Why are the red words blurred after opencv and ffmpeg screenshots from a video capture card ? [closed]

  28 août 2024, par yaxin xing

  I tried to take a screenshot after getting the video stream through the video capture card, but the words in red font become blurry after taking the screenshot, but setting the video format to XRGB format in OBS makes it clear. How can I solve this problem in python ?

  


  As you can see in the picture, the red letters are much less clear than the other colors
enter image description here

  


  I tried to capture a frame in ffmpeg and set -pix_fmt but it's still blurry, I tried 4:4:4 color modes like nv12, yuv444, rgb24, etc. but it doesn't work.

  


  I also tried passing ffmpeg's video stream to opencv via pipe, but opencv's recombination of its color channels when converting the video stream caused the colors to change, and didn't solve the problem of the red font not being clear either

  


• rtpdec : Don’t free the payload context in the .free function

  24 février 2015, par Martin Storsjö

  rtpdec : Don’t free the payload context in the .free function
  This makes it more consistent with depacketizers that don’t have any
  
  .free function at all, where the payload context is freed by the
  
  surrounding framework. Always free the context in the surrounding
  
  framework, having the individual depacketizers only free any data
  
  they’ve specifically allocated themselves.
  This is similar to how this works for demuxer/muxers/codecs - a
  
  component shouldn’t free the priv_data that the framework has
  
  allocated for it.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/rdt.c
  • [DBH] libavformat/rtpdec.h
  • [DBH] libavformat/rtpdec_ac3.c
  • [DBH] libavformat/rtpdec_dv.c
  • [DBH] libavformat/rtpdec_h261.c
  • [DBH] libavformat/rtpdec_h263_rfc2190.c
  • [DBH] libavformat/rtpdec_h264.c
  • [DBH] libavformat/rtpdec_jpeg.c
  • [DBH] libavformat/rtpdec_latm.c
  • [DBH] libavformat/rtpdec_mpa_robust.c
  • [DBH] libavformat/rtpdec_mpeg4.c
  • [DBH] libavformat/rtpdec_mpegts.c
  • [DBH] libavformat/rtpdec_qt.c
  • [DBH] libavformat/rtpdec_svq3.c
  • [DBH] libavformat/rtpdec_vp8.c
  • [DBH] libavformat/rtpdec_xiph.c
  • [DBH] libavformat/rtsp.c

• Recursively Convert FLAC to MP3 Keeping All Metadata and Located in Same Directory

  6 juin 2020, par charlesstricklin

  I've got ffpeg installed on my Windows 10 PC and I'd like to recursively convert .flac music into .mp3 within the same directory (by that I mean the .flac file and the .mpg file end up in the same folder) and I'll be the first to admit I'm just a beginner to both ffmpeg and the CLI, so I'm a newbie there.

  



  I've been looking at Recursively Converting FLAC to MP3 Using FFmpeg While Maintaining Metadata and Directory Structure on Windows as a possible answer to my question, but I do not want to copy from one volume to another.

  



  Just to avoid confusion, my highest directory is C :\Users\User\Downloads\Music\ and I'd like to convert several artist/band's tracks from .flac to .mp3 within the same directory. C :\Users\User\Downloads\Music\1st Artist\1st CD\1st Track.flac would be converted to C :\Users\User\Downloads\Music\1st Artist\1st CD\1st Track.mp3, C :\Users\User\Downloads\Music\2nd Artist\1st CD\1st Track.flac would be converted to C :\Users\User\Downloads\Music\2nd Artist\1st CD\1st Track.mp3 and so on.

  



  Would someone clue me in on the best way you know of to accomplish that from the CLI, please ?