[mythtv-commits] Ticket #9892: Latest mplayer breaks nuvexport

[MythTV]

#9892: Latest mplayer breaks nuvexport
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 Reporter:  cto@…                         |          Owner:  beirdo
     Type:  Bug Report - Hang/Deadlock    |         Status:  closed
 Priority:  minor                         |      Milestone:  0.25
Component:  Bindings - Perl               |        Version:  0.24.1
 Severity:  medium                        |     Resolution:  fixed
 Keywords:  nuvexport, mplayer, mencoder  |  Ticket locked:  0
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Comment (by mpc_myth@…):

 The problem with switching to -frames 0 instead of -frames 1 is that it
 causes mis-detections of the aspect ratio for some recordings.

 Example recording from BBC1 (TV, 10th Sep 11) produces a non-detection of
 the aspect ratio:


 {{{
 $ mplayer -frames 0 -identify 1001_20110910180000.mpg 2>&1 | grep ^ID
 ID_VIDEO_ID=0
 ID_AUDIO_ID=0
 ID_FILENAME=1001_20110910180000.mpg
 ID_DEMUXER=mpegps
 ID_VIDEO_FORMAT=0x10000002
 ID_VIDEO_BITRATE=15000000
 ID_VIDEO_WIDTH=720
 ID_VIDEO_HEIGHT=576
 ID_VIDEO_FPS=25.000
 ID_VIDEO_ASPECT=0.0000     <<<< Badly detected aspect ratio
 ID_AUDIO_FORMAT=80
 ID_AUDIO_BITRATE=0
 ID_AUDIO_RATE=0
 ID_AUDIO_NCH=0
 ID_START_TIME=0.29
 ID_LENGTH=3841.48
 ID_SEEKABLE=1
 ID_CHAPTERS=0
 ID_VIDEO_CODEC=ffmpeg2
 ID_AUDIO_BITRATE=256000
 ID_AUDIO_RATE=48000
 ID_AUDIO_NCH=2
 ID_AUDIO_CODEC=mpg123
 ID_EXIT=EOF
 }}}


 Running the same with -frames 1 gives:


 {{{
 $ mplayer -frames 1 -identify 1001_20110910180000.mpg 2>&1 | grep ^ID
 ID_VIDEO_ID=0
 ID_AUDIO_ID=0
 ID_FILENAME=1001_20110910180000.mpg
 ID_DEMUXER=mpegps
 ID_VIDEO_FORMAT=0x10000002
 ID_VIDEO_BITRATE=15000000
 ID_VIDEO_WIDTH=720
 ID_VIDEO_HEIGHT=576
 ID_VIDEO_FPS=25.000
 ID_VIDEO_ASPECT=0.0000     <<<< As before
 ID_AUDIO_FORMAT=80
 ID_AUDIO_BITRATE=0
 ID_AUDIO_RATE=0
 ID_AUDIO_NCH=0
 ID_START_TIME=0.29
 ID_LENGTH=3841.48
 ID_SEEKABLE=1
 ID_CHAPTERS=0
 ID_VIDEO_CODEC=ffmpeg2
 ID_AUDIO_BITRATE=256000
 ID_AUDIO_RATE=48000
 ID_AUDIO_NCH=2
 ID_AUDIO_CODEC=mpg123
 ID_VIDEO_ASPECT=1.7778     <<<<< Correct ratio
 ID_EXIT=EOF
 }}}


 So, although the change to -frames 0 avoids the 'forever-hang' on some
 recordings, it causes others to have the wrong aspect ratio reported.

 Cheers,

 Mark

-- 
Ticket URL: <http://code.mythtv.org/trac/ticket/9892#comment:3>
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