[mythtv] Re: nuvexport mpeg2cut doesn't work on dvb-t mpeg

[Thomas Husemann]

Hi Gavin,

I made a recording for you. It's one minute long. I also dumped the
recordedmarkups. You can find it on http://thusemann.dyndns.org/~thomas/

Hopefully that you can fix mpeg2cut because it's my favourite programm
to cut my recordings. It works very well with my pvr x50 ;-)

Regards

Thomas


Gavin Hurlbut schrieb:
> Thomas Husemann <thomas at thusemann.dyndns.org> wrote:
> 
>>I tried to cut my recording with nuexport. The recording was produced by 
>>dvb-t card (AverMedia DVB-T 771). First problem was the Xvfb server. My 
>>solution:
> 
> 
> Oh fun.  :)
> 
> 
>>-    ${XVFB} :13 -screen 0 640x480x8 2> /dev/null > /dev/null &
>>+    ${XVFB} :13 -ac -screen 0 640x480x8 2> /dev/null > /dev/null &
> 
> 
> Hmmm.  Disabling access controls...  I guess that's not a bad idea.  I'll work
> that in.  I also had someone else who needed to run in 24 colour mode for soem
> reason, so I'll likely put that in too.
> 
> 
>>mpeg2cut /mnt/store/1006_20041117101800_20041117104500.nuv "./King of 
>>Queens -In Flagranti".mpg  2521-18637 30102-45445 45537-
> 
> 
> OK, there's the first problem.  Seems that myth isn't putting in GOP frame 
> indexes into the database for your video.  Without that, we have no idea what
> the last frame number will be, and hence we can't cut...
> 
> Soooo.  Could you get me a dump of *one* show's worth of recordedmarkups 
> database entries?  You'd need to be handy with SQL, and preferrably use a short
> recording.  Please email it to me directly.
> 
> 
>>mpeg2cut v1.6
>>Using mode Xvfb
>>Filename "/mnt/store/1006_20041117101800_20041117104500.nuv"
>>OutFile "./King of Queens -In Flagranti.mpg"
>>Last GOP index 2521-18637
> 
> 
> Baaaaad. :)
> 
> 
>>*more debug* (with set -x and stderror)
> 
> 
> Ahhh, learn something new every day.
> 
> 
>>  720 x 576 at 25000 fps
>> >>>Other PTS = 3208911210
> 
> 
>>  could not get sync!
> 
> 
>>**error reading packet**
> 
> 
>>  io error , aborting sync
> 
> 
>>  end of stream...
> 
> 
> Also bad...   Seems avidemux barfs on your MPEG files.  It seems that maybe
> Myth isn't actually generating a proper MPEG2-PS file from the MPEG2-TS stream
> perhaps?  Hard to tell so far.
> 
> 
> If it can't index, it's game over.
> 
> 
>>*tcprobe from mpegstream*
> 
> 
>>[tcprobe] MPEG program stream (PS)
>>[tcprobe] summary for /mnt/store/1006_20041117101800_20041117104500.nuv, 
>>(*) = not default, 0 = not detected
>>import frame size: -g 720x576 [720x576]
>>      aspect ratio: 4:3 (*)
>>        frame rate: -f 25.000 [25.000] frc=3
>>                    PTS=35655.2287, frame_time=40 ms, bitrate=15000 kbps
>>       audio track: -a 0 [0] -e 48000,16,2 [48000,16,2] -n 0x50 [0x2000] (*)
>>                    PTS=35654.5690, bitrate=192 kbps
>>                    -D 16 --av_fine_ms 19 (frames & ms) [0] [0]
>>detected (3) presentation unit(s) (SCR reset)
> 
> 
> Hmmm.  3 presentation units?  Interesting, never seen that with my ivtv
> generated files.
> 
> I do have some test recordings to test with tonight, so I'll see if I can dig
> anything up.
> 
> In the mean-time, it looks like mpeg2cut will not work for your recordings.
> Hold on a few days, I'll try to fix that. :)
> 
> Ciao
> Gavin
> 
> 
> 
>>Any suggestions ?
> 
> 
>>Regards
> 
> 
>>Thomas
> 
> 
> 
> 
> 
> 
> 
> 
> 
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