[mythtv-users] mpeg-2 cut using nuvexport

[Praveen Shenoy]

I am using PVR-350 and this is the output of tcprobe -i

tcprobe -i 1048_20050301025900_20050301061000.nuv
[tcprobe] MPEG program stream (PS)
[tcprobe] summary for 1048_20050301025900_20050301061000.nuv, (*) = not 
default, 0 = not detected
import frame size: -g 480x480 [720x576] (*)
     aspect ratio: 4:3 (*)
       frame rate: -f 29.970 [25.000] frc=4 (*)
                   PTS=0.4004, frame_time=33 ms, bitrate=6000 kbps
      audio track: -a 0 [0] -e 48000,16,2 [48000,16,2] -n 0x50 [0x2000] (*)
                   PTS=0.3339, bitrate=384 kbps
                   -D 1 --av_fine_ms 33 (frames & ms) [0] [0]

Praveen

Bene Martin wrote:

>>the this is what I saw and it did not finish even after 11 hours. Can 
>>anybody shed some light on what might be happening?
>>    
>>
>
>Possibly - I've spent quite some time getting mpeg2cut to work on my
>system.
> 
>  
>
>>which: no Xvfb in
>>(/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin
>>:/home/mythtv/bin)
>>mpeg2cut v1.7
>>Using mode X
>>Finding the AV Offset to use with lvemux: -33
>>Indexing the file with avidemux2
>>Cutting out commercials with avidemux2
>>    
>>
>
>  
>
>>When I hit Ctrl+C it said something like finsihed encoding 
>>and it took 
>>11 hrs. I see a message about no Xvfb at the begining. Does this have 
>>anything to do with the never ending cutting process?
>>    
>>
>
>avidemux2 is an X11 program that tries to output status/progress
>information even when run in batch mode. So, you need some kind of X
>server for avi2demux to output to.
>best choice is Xvfb - a virtual framebuffer X server; this lets
>avidemux2 work without actually opening any windows. You don't have it,
>so fallback to plan b:
>avi2demux just uses your defined DISPLAY environment variable and opens
>an X window on your display. should work OK if X is setup correctly and
>other X stuff works.
>  
>
>>Also, is the output of nuvexport on cutting the mpeg-2 mpeg-4 
>>or still mpeg-2?
>>    
>>
>
>Output is mpeg-2; processing should be fairly fast since no reencoding
>is needed for most of the file.
>
>What type of file is the original mpeg stream? post the output of 
>	tcprobe -i
>/video/recordings/1037_20050305195900_20050305231000.nuv
>if the output shows 
>	[tcprobe] MPEG packetized elementary stream (PES)
>as file type, avidemux2 can't handle the format and so the whole process
>fails. 
>Your files are from a DVB source, right?
>two possible workarounds: when using mythtv > 0.16, you should try to
>set the "record TS" option in setup to record the DVB transport stream
>directly instead of converting to a PES stream. For mythtv 0.16 this
>isn't supported (doesn't work); also it would only help you for new
>files.
>
>For your existing files, you'd have to convert your PES format files to
>PS format using (for example) replex or lvemux before running nuvexport.
>
>Bye, Martin
>  
>
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