[mythtv-users] [UK] BBC HD and BBC ONE HD - recording length incorrect

Paul Gardiner lists at glidos.net
Fri Dec 24 16:03:23 UTC 2010


On 23/12/2010 22:15, Taylor Ralph wrote:
> On Thu, Dec 23, 2010 at 10:31 AM, Paul Gardiner<lists at glidos.net>  wrote:
>> On 22/12/2010 23:39, Taylor Ralph wrote:
>>>
>>> On Wed, Dec 22, 2010 at 5:26 PM, David Knight<dlknight at sdf.lonestar.org>
>>>   wrote:
>>>>
>>>> On Wed, December 22, 2010 12:11 pm, Taylor Ralph wrote:
>>>>>
>>>>> On Wed, Dec 22, 2010 at 6:13 AM, David Knight<dlknight at sdf.lonestar.org>
>>>>> wrote:
>>>>>>
>>>>>> FFmpeg version SVN-r25557-snapshot, Copyright (c) 2000-2010 the FFmpeg
>>>>>> developers
>>>>>> �built on Oct 24 2010 07:32:30 with gcc 4.4.4 20100630 (Red Hat
>>>>>> 4.4.4-10)
>>>>>> �configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
>>>>>> --mandir=/usr/share/man --enable-shared --enable-gpl --enable-version3
>>>>>> --enable-nonfree --enable-postproc --enable-avfilter --enable-pthreads
>>>>>> --enable-x11grab --enable-vdpau --disable-avisynth --enable-libdc1394
>>>>>> --enable-libdirac --enable-libfaac --enable-libgsm --enable-libmp3lame
>>>>>> --enable-libnut --enable-libopencore-amrnb --enable-libopencore-amrwb
>>>>>> --enable-libopenjpeg --enable-libschroedinger --enable-libspeex
>>>>>> --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid
>>>>>> --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
>>>>>> -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC'
>>>>>> --disable-stripping
>>>>>> �libavutil � � 50.32. 3 / 50.32. 3
>>>>>> �libavcore � � �0. 9. 1 / �0. 9. 1
>>>>>> �libavcodec � �52.93. 0 / 52.93. 0
>>>>>> �libavformat � 52.84. 0 / 52.84. 0
>>>>>> �libavdevice � 52. 2. 2 / 52. 2. 2
>>>>>> �libavfilter � �1.53. 0 / �1.53. 0
>>>>>> �libswscale � � 0.12. 0 / �0.12. 0
>>>>>> �libpostproc � 51. 2. 0 / 51. 2. 0
>>>>>> [h264 @ 0x1e1c490] non-existing SPS 0 referenced in buffering period
>>>>>> [h264 @ 0x1e1c490] non-existing PPS referenced
>>>>>> [h264 @ 0x1e1c490] non-existing SPS 0 referenced in buffering period
>>>>>> [h264 @ 0x1e1c490] non-existing PPS 0 referenced
>>>>>> [h264 @ 0x1e1c490] decode_slice_header error
>>>>>> [h264 @ 0x1e1c490] non-existing PPS 0 referenced
>>>>>> [h264 @ 0x1e1c490] decode_slice_header error
>>>>>> [h264 @ 0x1e1c490] non-existing PPS 0 referenced
>>>>>> [h264 @ 0x1e1c490] decode_slice_header error
>>>>>> [h264 @ 0x1e1c490] non-existing PPS 0 referenced
>>>>>> [h264 @ 0x1e1c490] decode_slice_header error
>>>>>> [h264 @ 0x1e1c490] non-existing PPS 0 referenced
>>>>>> [h264 @ 0x1e1c490] decode_slice_header error
>>>>>> [h264 @ 0x1e1c490] non-existing PPS 0 referenced
>>>>>> [h264 @ 0x1e1c490] decode_slice_header error
>>>>>> [h264 @ 0x1e1c490] no frame!
>>>>>>
>>>>>> Above errors repeated for couple of pages.
>>>>>>
>>>>>> [mpegts @ 0x1e166e0] max_analyze_duration reached
>>>>>> [NULL @ 0x1e3a630] start time is not set in
>>>>>> av_estimate_timings_from_pts
>>>>>> Input #0, mpegts, from '/video/default/8941_20101127194500.mpg':
>>>>>> �Duration: 00:46:26.00, start: 5649.660133, bitrate: 7424 kb/s
>>>>>> �Program 1
>>>>>> � �Stream #0.0[0x1518]: Video: h264, yuv420p, 1440x1080 [PAR 4:3 DAR
>>>>>> 16:9], 27.53 fps, 25 tbr, 90k tbn, 50 tbc
>>>>>> � �Stream #0.1[0x151a](NAR): Audio: mp2, 48000 Hz, 2 channels, s16, 256
>>>>>> kb/s
>>>>>> � �Stream #0.2[0x151b](eng): Subtitle: [6][0][0][0] / 0x0006
>>>>>> � �Stream #0.3[0x151c](eng): Subtitle: dvbsub
>>>>>> � �Stream #0.4[0x1519](eng): Audio: ac3, 48000 Hz, stereo, s16, 192
>>>>>> kb/s
>>>>>> At least one output file must be specified
>>>>>>
>>>>>> Dave K.
>>>>>>
>>>>>
>>>>> Is 00:46:26.00 the correct duration? What does MythTV show for the
>>>>> duration? We now use the ffmpeg duration so if it's correct then the
>>>>> next release will contain the fix.
>>>>>
>>>>> Regards.
>>>>> --
>>>>> Taylor
>>>>>
>>>>>
>>>>
>>>> Yes 00:46:26.00 is the correct duration, MythTV reports 00:36:07 when
>>>> playing back the recording in mythfrontend. Playback continues when the
>>>> status bar reaches the end but rewind and fast forward do not work
>>>> correctly.
>>>>
>>>> Will the fix be backported to 0.24-fixes?
>>>>
>>>> Thanks,
>>>>
>>>> Dave
>>>>
>>>
>>> I wasn't planning on back-porting the change since it still needs
>>> considerable testing and caused a few issues already that I had to
>>> fix. Could you play the recording back with -v playback,timestamp and
>>> see if you find any messages with "repeat_pict" in them?
>>
>> Is there a commit (or set of commits) I could cherry pick onto
>> fixes/0.24 in my local repository?
>>
>> Cheers,
>>         Paul.
>
> There are several commits that would be required to resolve the
> duration and time position issue. I believe they will not cleanly
> apply if cherry-picked. This will only correct the problem
> cosmetically but will not solve the seeking/bookmark issue.
>
> The core of the problem is most likely related to either mythcommflag
> or the player not handling the frame count correctly. Someone needs to
> create a sample that shows the problem and create a ticket if one
> doesn't already exist and provide a link to the sample. Please make
> sure the sample is ran through mythcommflag (creates a position map)
> and exhibits the problem. It might actually play properly if it
> doesn't have a position map. One way to check this is to copy the
> recording over to MythVideo and change the name then see if it plays
> properly or not.

Yes, you are right. Bookmarks work fine when the recording is copied
to MythVideo. I don't have any small recordings to upload anywhere
just now, but I have something small set up for tonight.

Paul.


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