[mythtv-commits] Ticket #10606: Cutlist editor and keyframe selection

[MythTV]

#10606: Cutlist editor and keyframe selection
------------------------+--------------------------------------
 Reporter:  J.Pilk@…    |           Type:  Bug Report - General
   Status:  new         |       Priority:  minor
Milestone:  unknown     |      Component:  MythTV - General
  Version:  0.25-fixes  |       Severity:  medium
 Keywords:              |  Ticket locked:  0
------------------------+--------------------------------------
 Using mythtv-0.25-285.el6.i686.rpm from ATrpms

 Editing dvb-t2 HD recording.  Stepping by keyframes consistently gives a
 degraded picture.  Stepping back one frame, or stepping forward around
 eight frames, produces a crisp picture, and further one-frame steps in
 either direction remain crisp.  Larger steps yield variable quality
 displays, probably depending on how far they are from the preceding
 keyframe.  Seektable by mythcommflag --rebuild --file.

 Seen on a laptop that can play this content smoothly at around 0.6
 timestretch.

 Video playback profile Normal.  Frontend startup log extract:

 2012-04-15 11:10:58.729330 I  Trying the OpenGL painter
 2012-04-15 11:10:58.804260 W  OpenGL: Could not determine whether Sync to
 VBlank is enabled.
 2012-04-15 11:10:58.874417 I  OpenGL1: Fragment program support available
 2012-04-15 11:10:58.874531 I  OpenGL: OpenGL vendor  : Tungsten Graphics,
 Inc
 2012-04-15 11:10:58.874550 I  OpenGL: OpenGL renderer: Mesa DRI Intel(R)
 945GM
 2012-04-15 11:10:58.874584 I  OpenGL: OpenGL version : 1.4 Mesa 7.11
 2012-04-15 11:10:58.874607 I  OpenGL: Max texture size: 2048 x 2048
 2012-04-15 11:10:58.874626 I  OpenGL: Max texture units: 8
 2012-04-15 11:10:58.874640 I  OpenGL: Direct rendering: Yes
 2012-04-15 11:10:58.874662 I  OpenGL: PixelBufferObject support available
 2012-04-15 11:10:58.874673 I  OpenGL: Initialised MythRenderOpenGL

 Mediainfo video output:

 General
 ID                                       : 16517 (0x4085)
 Complete name                            :
 /home/john/Mythrecs/1050_20120414155800.mpg
 Format                                   : MPEG-TS
 File size                                : 2.92 GiB
 Duration                                 : 43mn 10s
 Overall bit rate mode                    : Variable
 Overall bit rate                         : 9 669 Kbps

 Video
 ID                                       : 6601 (0x19C9)
 Menu ID                                  : 1 (0x1)
 Format                                   : AVC
 Format/Info                              : Advanced Video Codec
 Format profile                           : High at L4.0
 Format settings, CABAC                   : Yes
 Format settings, ReFrames                : 4 frames
 Format settings, GOP                     : M=8, N=24
 Codec ID                                 : 27
 Duration                                 : 43mn 9s
 Width                                    : 1 440 pixels
 Height                                   : 1 080 pixels
 Display aspect ratio                     : 16:9
 Frame rate                               : 25.000 fps
 Color space                              : YUV
 Chroma subsampling                       : 4:2:0
 Bit depth                                : 8 bits
 Scan type                                : MBAFF
 Scan order                               : Top Field First
 Color primaries                          : BT.709-5, BT.1361, IEC
 61966-2-4, SMPTE RP177
 Transfer characteristics                 : BT.709-5, BT.1361
 Matrix coefficients                      : BT.709-5, BT.1361, IEC
 61966-2-4 709, SMPTE RP177

-- 
Ticket URL: <http://code.mythtv.org/trac/ticket/10606>
MythTV <http://code.mythtv.org/trac>
MythTV Media Center