[FFmpeg-trac] #1725(avfilter:new): filter_complex losing frames

FFmpeg trac at avcodec.org
Mon Sep 10 18:53:33 CEST 2012


#1725: filter_complex losing frames
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             Reporter:  takis       |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by Cigaes):

 Replying to [comment:1 takis]:
 > {{{
 > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
 '/srv/files/videos/big_buck_bunny_1080p_h264.mov':
 >     Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
 1920x1080, 9282 kb/s, 24 fps, 24 tbr, 2400 tbn, 4800 tbc
 > Input #1, image2, from 'frame%05d.png':
 >     Stream #1:0: Video: png, rgba, 3840x2160, 25 fps, 25 tbr, 25 tbn, 25
 tbc
 > }}}

 As quoted, your main video is 24 FPS while the overlay video (they are
 actually images, but ffmpeg sees them as a single video) is 25 FPS: one
 frame per second of the overlay falls between two frames of the main input
 and is dropped. That is normal behaviour. If your frames are supposed to
 match, specify the frame rate for the images.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1725#comment:3>
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