[FFmpeg-trac] #3439(ffmpeg:new): Feature request: Support for multiple codecs and resolutions using concat demuxer

[FFmpeg]

#3439: Feature request: Support for multiple codecs and resolutions using concat
demuxer
-------------------------------------+-------------------------------------
             Reporter:  Valpskott    |                     Type:  defect
               Status:  new          |                 Priority:  wish
            Component:  ffmpeg       |                  Version:
             Keywords:  concat,      |  unspecified
  demuxer, splice, codecs            |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug: concat fails when splicing two videos of different
 codecs
 How to reproduce:
 Have 2 videofiles, movie1.mov with mpeg4 video-codec and movie2.avi with
 h264 video-codec
 Create a file (clips.txt) with following 2 lines:

 file 'movie1.mov'
 file 'movie2.avi'

 After the command below, watch resulting video after the splice.

 {{{
 ffmpeg -f concat -i clips.txt -vcodec libx264 -preset ultrafast -crf 24
 -pix_fmt yuv420p -s 1920x1080 -aspect 16:9 -acodec aac -strict
 experimental -b:a 128k -ar 44100 -ac 2 Final.mov

 ffmpeg version 2.1.git Copyright (c) 2000-2014 the FFmpeg developers
   built on Mar  1 2014 16:09:23 with gcc 4.6 (Ubuntu/Linaro
 4.6.3-1ubuntu5)
   configuration: --prefix=/home/johan/ffmpeg_build --extra-
 cflags=-I/home/johan/ffmpeg_build/include --extra-
 ldflags=-L/home/johan/ffmpeg_build/lib --bindir=/home/johan/bin --extra-
 libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-
 libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis
 --enable-libvpx --enable-libx264 --enable-nonfree
   libavutil      52. 66.100 / 52. 66.100
   libavcodec     55. 52.102 / 55. 52.102
   libavformat    55. 33.100 / 55. 33.100
   libavdevice    55. 10.100 / 55. 10.100
   libavfilter     4.  2.100 /  4.  2.100
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 18.100 /  0. 18.100
   libpostproc    52.  3.100 / 52.  3.100
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/3439>
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