[mythtv-users] pvr250 to svcd?

ray cielencki mythtv at rayslinky.com
Sat Oct 4 03:07:40 EDT 2003


if you don't identify the input as an mpeg2 (with -x) transcode has problems.
heres what i use:

transcode -i /var/video/1070_20030827013000_20030827020000.nuv -x mpeg2 -V 
-y mpeg -F s,2 -J skip="17474-22934 45074-53850" -E 44100 -b 128 -o 
jupiter-jazz

tcmplex -o jupiter-jazz.mpg -i jupiter-jazz.m2v -p jupiter-jazz.mpa -m s

/rayc

At 00:29 10/04/2003, you wrote:
>I'm going crazy here trying to get video recorded using mythtv (non-cvs) 
>on a pvr250 onto a svcd.  I saw there was a recent thread talking about 
>this but no one gave him the actual commands to use.
>
>I first tried using ffmpeg (ffmpeg -i vid.mpg -s 480x480 -b 1800 -ab 224 
>-r 29.97 vid_svcd.mpg) to scale down the video to the required svcd format 
>and then using vcdimager.  However vcdimager gives me an error saying:
>
>++ WARN: packet length beyond buffer (pos = 2054 + size = 2042 > buflen = 
>2324) -- stream may be truncated or packet length > 2324 bytes!
>**ERROR: input mpeg stream has been deemed invalid -- aborting
>
>(I tried adding the -p 2324 option to ffmpeg which I thought would set the 
>packet length but I still got the same error)
>
>So then I tried using transcode from the documentation example (transcode 
>-i vid.mpg -V -y mpeg2enc,mp2enc -F 5,"-b 4000" -Z 480x480 -E 44100 -b 128 
>-o test) but that gives me the following error:
>
>**ERROR: [mp2enc] Error reading wave data
>
>I also tried using ffmpeg to convert it to an avi and using the directions 
>from http://www.satlug.org/~bigjnsa/vcd-linux.htm however it gives an 
>error saying:
>
>++ WARN: [lav2wav] Input file smallville_vcd.avi is not in  JPEG 4:2:2 or 
>4:2:0 format
>**ERROR: [lav2wav] Input file(s) have no audio
>**ERROR: [mp2enc] EOF in WAV header
>**ERROR: [mp2enc] failure reading WAV file
>
>Please does anyone know how to do this?  All the files I've generated play 
>fine in mplayer.  I'd love to be able to do this on linux and not resort 
>to a windows program.  Whats really frustrating is that most of my google 
>searches looking for help turn up in non-english discussions.
>That and the fact that it takes so long for me to transcode into different 
>formats to try different things that I've started thinking about setting 
>up a openmosix cluster to process the video.  :)
>
>Help!



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