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• FFMPEG h264 grey frame and artifacts at beginning

  28 novembre 2011, par marce002

  I'm splitting my "zi6 quicktime mov" hd videos, I have 250 clips of around 10 or 15 seconds each, from lot of places, locationes around the globe and want to combine them in a single big clip.

  I can merge them very good with "mkvmerge".

  The problem is that the first frames of all videos in the collection (splitted with ffmpeg), are gray or with artifacts at beggining, I do not know how to explain, maybe wrong ffmpeg commands, I'm doing this (with batch command line, which is great / fast for me):

  =======begin of batch file

  ffmpeg -i jockey_club_fpv.mov -ss 00:00:17 -t 00:00:24 -g 1 -sameq -vcodec copy -vf fade=in:0:30 partes3a.mov
  ffmpeg -i jockey_club_fpv.mov -ss 00:04:40 -t 00:00:20 -g 1 -sameq -vcodec copy -vf fade=in:0:30 partes3b.mov
  ffmpeg -i jockey_club_fpv.mov -ss 00:05:35 -t 00:01:00 -g 1 -sameq -vcodec copy -vf fade=in:0:30 partes3c.mov
  ffmpeg -i jockey_club_fpv.mov -ss 00:07:11 -t 00:00:10 -g 1 -sameq -vcodec copy -vf fade=in:0:30 partes3d.mov
  ffmpeg -i jockey_club_fpv.mov -ss 00:07:45 -t 00:00:21 -g 1 -sameq -vcodec copy -vf fade=in:0:30 partes3e.mov
  ffmpeg -i jockey_club_fpv.mov -ss 00:08:47 -t 00:00:05 -g 1 -sameq -vcodec copy -vf fade=in:0:30 partes3f.mov
  ffmpeg -i jockey_club_fpv.mov -ss 00:09:18 -t 00:00:10 -g 1 -sameq -vcodec copy -vf fade=in:0:30 partes3g.mov
  ffmpeg -i jockey_club_fpv.mov -ss 00:09:35 -t 00:00:09 -g 1 -sameq -vcodec copy -vf fade=in:0:30 partes3h.mov
  ffmpeg -i jockey_club_fpv.mov -ss 00:10:07 -t 00:00:16 -g 1 -sameq -vcodec copy -vf fade=in:0:30 partes3i.mov
  mkvmerge -o join4.mov partes3a.mov + partes3b.mov + partes3c.mov + partes3d.mov + partes3e.mov + partes3f.mov + partes3g.mov + partes3h.mov + partes3i.mov
  

  =======end of batch file

  Thanks a lot for any answer!!

• ffmpeg source code modification [closed]

  27 novembre 2011, par adismsc

  Anybody is able to help me modify source code of an ffmpeg in a way that during encoding to an mpeg-ts container SDT tables were not added? Or if is it possible: how to disable SDT tables in encoding process?

• Embedding an AVI/MPG in a Web Page

  27 novembre 2011, par Prashant

  I would like to play a video (AVI/MPG) on a PHP page. How can I do this? I would also like to generate thumbnails for each video. Could anyone suggest some tools?

• how to play a avi/mpeg video on webpage ?

  27 novembre 2011, par Prashant

  I wanna play a video avi/mpeg video on php webpage. How can I do this?

  I also want to generate the thumbnails for every video as well. Could anyone suggest some tools?

  Thanks.

• Concatenation of files using ffmpeg does not work as I expected. Why ?

  27 novembre 2011, par Peter Olson

  I execute the following command line for ffmpeg.exe -i C:\Beema\video-source\DO_U_BEEMA176x144short.avi -i C:\Beema\video-source\DO_U_BEEMA176x144short.avi -i C:\Beema\temp\9016730-51056331-stitcheds.avi
  -i C:\Beema\video-source\GOTTA_BEEMA176x144short.avi -y -ac 1 -r 24 -b 25K C:\Beema\video-out\9a062fb6-d448-48fe-b006-a85d51adf8a1.mpg

  The output file in video-out ends up having a single copy of DO_U_BEEMA. I do not understand why ffmpeg is not concatenating.

  Any help is dramatically appreciated,