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mjpeg-howto: Checking if recording was successful

 
 5 Checking if recording was successful
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 You can use lavplay or glav. `IMPORTANT: NEVER' try to run xawtv and
 lavplay or glav with hardware playback, it will not work. For software
 playback it works fine.
 
    `>lavplay -p S record.avi'
 
    You should see the recorded video and hear the sound. But the
 decoding of the video is done by the CPU which will place a heavy load
 on the system.  The advantage of this method is you don't need xawtv.
 
    The better way:
 
    `>lavplay -p H record.avi'
 
    The video is decoded and played by the hardware. The system load is
 now very low. This will play it back on-screen using the hardware
 rather than software decoding.
 
    You might also try:
 
    `> lavply -p C record.avi'
 
    Which will play it back using the hardware but to the video output of
 the card.
 
    `> glav record.avi'
 
    Does the same as lavplay but you have an nice GUI. The options for
 glav and lavplay are nearly the same. Using no option SW playback is
 used.
 
    Using hardware playback a signal for the Composite and SVHS OUT is
 generated so you can view the movie on your TV.
 
    `> lav2yuv test.eli | yuvplay'
 
    Is a other way to get the video without sound. You can use yuvplay
 once in the encoding command. When you use yuvplay in the encoding
 command you see the changes made by filters and scaling. You can also
 use it for slow-motion debugging.
 
    `NOTE:' After loading the driver's you have to start xawtv to set up
 some things lavplay and glav do not, but they are needed for
 HW-Playback. Don't forget to close xawtv !!
 
    `NOTE2:' Do not try to send glav an lavplay into background, wont
 work correct !!!
 
    `NOTE3:' SECAM playback is now (12.3.2001) only in monochrome, but
 the recording and encoding is done right.
 
    `NOTE4:'Bad cables may reduce the quality of the image. Normally you
 can't see this but when there is text you might notice a small shadow.
 When you see this you should change the cable.
 
    `Coming soon:' There is a tool which makes recoding videos very
 simple: Linux Studio. You can download it at: http://ronald.bitfreak.net
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