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• avformat/avformat : Remove redundant "NOT PART OF PUBLIC API"

  18 mars 2020, par Andreas Rheinhardt

  avformat/avformat : Remove redundant "NOT PART OF PUBLIC API"
  AVStream.request_probe as well as AVStream.mux_ts_offset are below the
  
  separator of public and private fields, so that a further "NOT PART OF
  
  PUBLIC API" is redundant.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavformat/avformat.h

• Revision f1781e86b7 : Refactoring of rate control - part 1 Moves all rate control variables to a sepa

  6 novembre 2013, par Deb Mukherjee

  Changed Paths :
   Modify /vp9/encoder/vp9_firstpass.c

  
   Modify /vp9/encoder/vp9_mbgraph.c

  
   Modify /vp9/encoder/vp9_onyx_if.c

  
   Modify /vp9/encoder/vp9_onyx_int.h

  
   Modify /vp9/encoder/vp9_ratectrl.c

  
   Modify /vp9/encoder/vp9_ratectrl.h

  
   Modify /vp9/encoder/vp9_temporal_filter.c

  
  
  Refactoring of rate control - part 1

  Moves all rate control variables to a separate structure,
  removes some currently unused variables,
  moves some rate control functions to vp9_ratectrl.c,
  and splits the encode_frame_to_data_rate function.

  Change-Id : I4ed54c24764b3b6de2dd676484f01473724ab52b

• How to add watermark to the video part of this huge ffmpeg command that adds intro and outro with crossfade ?

  3 juillet 2017, par Jeflopo

  I wrote a command that crossfade merge an intro, an outro, with a video :

  

  ffmpeg -i intro.mp4 -i video.mp4 -i outro.mp4 -filter_complex "
  
  [0:v]trim=start=0:end=9,setpts=PTS-STARTPTS,scale=480x360,setsar=sar=16/9[intro]; 
  
  [0:v]trim=start=9:end=10,setpts=PTS-STARTPTS,scale=480x360,setsar=sar=16/9[firstfadeoutclip]; 
  
  [1:v]trim=start=0:end=1,setpts=PTS-STARTPTS,scale=480x360,setsar=sar=16/9[firstfadeinclip]; 
  
  [1:v]trim=start=1:end=24,setpts=PTS-STARTPTS,scale=480x360,setsar=sar=16/9[video]; 
  
  [1:v]trim=start=24:end=25,setpts=PTS-STARTPTS,scale=480x360,setsar=sar=16/9[secondfadeoutclip]; 
  
  [2:v]trim=start=0:end=1,setpts=PTS-STARTPTS,scale=480x360,setsar=sar=16/9[secondfadeinclip]; 
  
  [2:v]trim=start=1:end=10,setpts=PTS-STARTPTS,scale=480x360,setsar=sar=16/9[outro]; 
  
  [firstfadeoutclip]format=pix_fmts=yuva420p, fade=t=out:st=0:d=1:alpha=1[firstfadeoutalpha]; 
  
  [firstfadeinclip]format=pix_fmts=yuva420p, fade=t=in:st=0:d=1:alpha=1[firstfadeinalpha]; 
  
  [secondfadeoutclip]format=pix_fmts=yuva420p, fade=t=in:st=0:d=1:alpha=1[secondfadeoutalpha]; 
  
  [secondfadeinclip]format=pix_fmts=yuva420p, fade=t=in:st=0:d=1:alpha=1[secondfadeinalpha]; 
  
  [firstfadeoutalpha]fifo[firstfadeoutfifo]; 
  
  [firstfadeinalpha]fifo[firstfadeinfifo]; 
  
  [secondfadeoutalpha]fifo[secondfadeoutfifo]; 
  
  [secondfadeinalpha]fifo[secondfadeoinfifo]; 
  
  [firstfadeoutfifo][firstfadeinfifo]overlay[firstcrossfade]; 
  
  [secondfadeoutfifo][secondfadeoinfifo]overlay[secondcrossfade]; 
  
  [intro][firstcrossfade][video][secondcrossfade][outro]concat=n=5[output]; 
  
  [0:a][1:a] acrossfade=d=1 [audio]" 
  
  -vcodec libx264 -map "[output]" -map "[audio]" "output.mp4"

  This huge command works fine.

  But now what I want to do is to add a watermark to the video part :

  [1:v]trim=start=1:end=24,setpts=PTS-STARTPTS,scale=480x360,setsar=sar=16/9[video];

  And I want to do it by merging this command (watermark) into that one above :

  ffmpeg -i "1080p.mp4" -filter_complex "
  
  movie=logo-wm.png[watermark];
  
  [watermark][0:V]scale2ref=(1917*iw/1920)/3.5:(322*iw/1920)/3.5[wm][v]; 
  
  [v][logo]overlay=main_w-overlay_w-20:20" "output.mp4"

  The whole (1917*iw/1920)/3.5:(322*iw/1920)/3.5 scales the watermark proportionally using the scale2ref= filter. The 1917 is the width of my watermark image, and 322 is the height

  It is overlayed in the top right corner with main_w-overlay_w-20:20

  But I can’t make it work I tried to add it by copying the parameters to the filter of [1:v] input. And by adding another input for the watermark that if I’m right it would be [3:v] instead of using the movie= filter. But I can’t.

  I know that I could do it in two steps, but I would like to do it at once, in just one command.

  May anyone help me to merge them ? Thank you in advance !