[FFmpeg-trac] #498(undetermined:reopened): Invalid pixel aspect ratio encoding mpeg4

[FFmpeg]

#498: Invalid pixel aspect ratio encoding mpeg4
-------------------------------------+-------------------------------------
             Reporter:  cehoyos      |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  important    |                Component:
              Version:  git-master   |  undetermined
             Keywords:  regression   |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  closed => reopened
 * resolution:  fixed =>


Comment:

 Still fails with -vf scale:
 {{{
 $ ffmpeg -i PAR1035.avi -vf scale=640:360 out.avi
 ffmpeg version N-33240-ga5dfeb6, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Oct  3 2011 10:53:02 with gcc 4.5.3
   configuration: --cc='/usr/local/gcc-4.5.3/bin/gcc -m32'
   libavutil    51. 19. 0 / 51. 19. 0
   libavcodec   53. 19. 0 / 53. 19. 0
   libavformat  53. 13. 0 / 53. 13. 0
   libavdevice  53.  4. 0 / 53.  4. 0
   libavfilter   2. 43. 6 /  2. 43. 6
   libswscale    2.  1. 0 /  2.  1. 0

 Seems stream 0 codec frame rate differs from container frame rate:
 30000.00 (30000/1) -> 29.97 (30000/1001)
 Input #0, avi, from 'PAR1035.avi':
   Metadata:
     encoder         : Lavf53.4.0
   Duration: 00:04:57.16, start: 0.000000, bitrate: 2 kb/s
     Stream #0:0: Video: mpeg4 (Simple Profile) (DX50 / 0x30355844),
 yuv420p, 720x406 [SAR 1:1 DAR 360:203], 29.97 fps, 29.97 tbr, 29.97 tbn,
 30k tbc
     Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16,
 192 kb/s
 [buffer @ 0x8cf2220] w:720 h:406 pixfmt:yuv420p tb:1/1000000 sar:1/1
 sws_param:
 [scale @ 0x8cef720] w:720 h:406 fmt:yuv420p -> w:640 h:360 fmt:yuv420p
 flags:0x4
 Incompatible sample format 's16' for codec 'ac3', auto-selecting format
 'flt'
 [mpeg4 @ 0x8ce5f20] Invalid pixel aspect ratio 405/406, limit is 255/255
 reducing
 [avi @ 0x8cc8220] Aspect ratio mismatch between encoder and muxer layer
 Output #0, avi, to 'out.avi':
   Metadata:
     encoder         : Lavf53.4.0
     Stream #0:0: Video: mpeg4, yuv420p, 640x360 [SAR 254:255 DAR
 4064:2295], q=2-31, 200 kb/s, SAR 405:406 DAR 360:203, 90k tbn, 29.97 tbc
     Stream #0:1: Audio: ac3, 48000 Hz, stereo, flt, 128 kb/s
 Stream mapping:
   Stream #0.0 -> #0.0 (mpeg4 -> mpeg4)
   Stream #0.1 -> #0.1 (mp3 -> ac3)
 Could not write header for output file #0 (incorrect codec parameters ?)
 }}}

-- 
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/498#comment:2>
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