[FFmpeg-trac] #5454(undetermined:new): problem concatenating videos

[FFmpeg]

#5454: problem concatenating videos
-------------------------------------+-------------------------------------
             Reporter:  edotom       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by edotom):

 Hi
 I uploaded a series of files that can be downloaded here:

 https://www.dropbox.com/l/yTirqhC1pQ4tX2TFWmVeOp/invite

 I uploaded also a file named understanding the problem.txt
 Here's the summary of the problem:
 Hi

 This is what I'm trying to accomplish:
 I need to join a series of files (all mp4) into one file
 (12279resultado.mp4)


 The source files are of two types: Image files (jpg) and video files (mkv)


 Every mkv was converted to mp4 using:

 "path\ffmpeg.exe" -report -i "path2\input.mkv" -vcodec copy "output\.mp4"

 Every jpg was converted to mp4 using:
 "path\ffmpeg.exe" -report -i "path2\input.jpg" -r 1/7 -c:v libx264 -preset
 slow -crf 21 -t 7 "path2\output.mp4"

 The intention is to have a 7fps video from an image for 7 seconds.

 In the end, all mp4 videos are joined using control.txt using:

 "path\ffmpeg.exe" -report -f concat -i "path2\control.txt" -c copy
 "12279resultado.mp4"

 The problem... al fur* files are not correctly shown in 12279resultado.mp4
 files.
 In some cases they do not show all 7 seconds or when they are close to the
 end of the list they do not show at all.


 thanks for your help

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5454#comment:7>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker