[FFmpeg-trac] #570(FFmpeg:new): Video flipped with inverted colors in flash after transcode

[FFmpeg]

#570: Video flipped with inverted colors in flash after transcode
--------------------------------------+---------------------------------
               Reporter:  brama       |                  Owner:  michael
                   Type:  defect      |                 Status:  new
               Priority:  normal      |              Component:  FFmpeg
                Version:  git-master  |               Keywords:
             Blocked By:              |               Blocking:
Reproduced by developer:  0           |  Analyzed by developer:  0
--------------------------------------+---------------------------------
 When transcoding the sample video below, the resulting output file will
 play OK in ubuntu's video player, but in a flash player it will be flipped
 and having its colors inverted.

 We're currently running an ffmpeg from oct 2010 which does not have this
 problem. I've tested ffmpeg 0.8.3, 0.8.5 and the master branch from
 yesterday (libx264 dito) which do exhibit the problem.

 After some investigation, it turns out that the corruption only occurs on
 certain output video sizes, while it works with other sizes.

 Command line with output resolution that produces the corrupt output:

 {{{
 ./ffmpeg -y  -i '/tmp/in.mp4' -s 320x180 -vcodec libx264 -acodec libfaac
 /tmp/out.mp4
 }}}

 320x184 output size produces a valid video in flash:


 {{{
 ./ffmpeg -y  -i '/tmp/in.mp4' -s 320x184 -vcodec libx264 -acodec libfaac
 /tmp/out.mp4
 }}}

 But 320x176 is also corrupted:

 {{{
 ./ffmpeg -y  -i '/tmp/in.mp4' -s 320x176 -vcodec libx264 -acodec libfaac
 /tmp/out.mp4
 }}}

 The sample input video is uploaded to upload.ffmpeg.org as
 /upload/uploaded/flipped_in_flash_after_transcode.mp4 and can also be
 retrieved here: http://bram.name/flipped_in_flash_after_transcode.mp4

 A sample output video with 320x180 dimensions that is corrupt in flash:
 http://bram.name/output_flipped_in_flash.mp4

 You can test the corruption in flash on this jwplayer test page (corrupt
 output file already filled in):
 http://developer.longtailvideo.com/trac/testing/?player=v5&skin=&file=http%3A%2F%2Fbram.name%2Foutput_flipped_in_flash.mp4&height=260&width=500


 Output for {{{ffmpeg -v 9 -loglevel 99 -i /tmp/in.mp4}}}:

 {{{

 ffmpeg version N-33733-gfe87b2e, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Oct 17 2011 21:24:52 with gcc 4.3.2
   configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-
 pthreads --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
 libfaac --enable-libgsm --enable-libmp3lame --enable-libx264 --enable-
 libvorbis --enable-libtheora --enable-avfilter
 --prefix=/home/botr/botr/localroot/opt/encoder --extra-cflags='-I
 /home/botr/botr/localroot/opt/encoder/include' --extra-ldflags='-L
 /home/botr/botr/localroot/opt/encoder/lib' --arch=x86_32 --enable-runtime-
 cpudetect --disabl
 e-ffplay --disable-ffserver --disable-ffprobe --disable-doc --enable-
 libvpx
   libavutil    51. 21. 0 / 51. 21. 0
   libavcodec   53. 20. 1 / 53. 20. 1
   libavformat  53. 16. 0 / 53. 16. 0
   libavdevice  53.  4. 0 / 53.  4. 0
   libavfilter   2. 43. 6 /  2. 43. 6
   libswscale    2.  1. 0 /  2.  1. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x96ebaa0] Format mov,mp4,m4a,3gp,3g2,mj2
 probed with size=2048 and score=100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x96ebaa0] ISO: File Type Major Brand: mp42
 [aac @ 0x96f2bc0] Unsupported bit depth: 0
 [h264 @ 0x96f1f90] no picture
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x96ebaa0] All info found
 rfps: 0.083333 0.000541
 rfps: 0.166667 0.002165
 rfps: 0.250000 0.004871
 rfps: 0.333333 0.008659
 rfps: 0.416667 0.013530
 rfps: 0.500000 0.019483
 rfps: 29.500000 0.017218
     Last message repeated 1 times

 rfps: 29.583333 0.011654
     Last message repeated 1 times
 rfps: 29.666667 0.007172
     Last message repeated 1 times
 rfps: 29.750000 0.003773
     Last message repeated 1 times
 rfps: 29.833333 0.001456
     Last message repeated 1 times
 rfps: 29.916667 0.000222
     Last message repeated 1 times
 rfps: 30.000000 0.000070
 rfps: 30.083333 0.001001
 rfps: 30.166667 0.003013
 rfps: 30.250000 0.006109
 rfps: 30.333333 0.010286
 rfps: 30.416667 0.015547
 rfps: 59.500000 0.015092
     Last message repeated 1 times
 rfps: 59.583333 0.009917
     Last message repeated 1 times
 rfps: 59.666667 0.005825
     Last message repeated 1 times
 rfps: 59.750000 0.002815
     Last message repeated 1 times
 rfps: 59.833333 0.000888
     Last message repeated 1 times
 rfps: 59.916667 0.000043

     Last message repeated 1 times
 rfps: 29.970030 0.000000
     Last message repeated 1 times
 rfps: 59.940060 0.000000
     Last message repeated 1 times
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/in.mp4':
   Metadata:
     major_brand     : mp42
     minor_version   : 0
     compatible_brands: mp42isom
     creation_time   : 2008-02-15 20:41:25
   Duration: 00:03:11.72, start: 0.000000, bitrate: 181 kb/s
     Chapter #0.0: start 0.000000, end 191.724854
     Metadata:
       title           :
     Stream #0:0(eng), 30, 1/48000: Video: h264 (Main) (avc1 / 0x31637661),
 yuv420p, 720x480 [SAR 32:27 DAR 16:9], 1001/60000, 1502 kb/s, SAR
 9709:8192 DAR 29127:16384, 29.97 fps, 29.97 tbr, 48k tbn, 59.94 tbc
     Metadata:
       creation_time   : 2008-02-15 20:41:25
     Stream #0:1(und), 1, 1/48000: Audio: aac (mp4a / 0x6134706D), 48000
 Hz, stereo, s16, 104 kb/s
     Metadata:
       creation_time   : 2008-02-15 20:41:25
     Stream #0:2(eng), 0, 1/48000: Subtitle: mov_text (text / 0x74786574)
     Metadata:
       creation_time   : 2008-02-15 20:41:25
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/570>
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