video

PhilD · 12-21-2004, 09:29 PM

Okay, I have a digital camera that also takes video. It is in mjpg format and plays fine with mplayer or xine. I have done a tcprobe -i on the file and the output is below:

Code:

[tcprobe] RIFF data, AVI video
[avilib] V: 15.162 fps, codec=MJPG, frames=420, width=288, height=208
[avilib] A: 8112 Hz, format=0x07, bits=8, channels=1, bitrate=64 kbps,
[avilib]    420 chunks, 224688 bytes, CBR
[tcprobe] summary for sv400010.avi, (*) = not default, 0 = not detected
import frame size: -g 288x208 [720x576] (*)
       frame rate: -f 15.162 [25.000] frc=0 (*)
      audio track: -a 0 [0] -e 8112,8,1 [48000,16,2] -n 0x7 [0x2000] (*)
                   bitrate=64 kbps
           length: 420 frames, frame_time=65 msec, duration=0:00:27.699

I am trying to convert it into a format I can edit and put up on the web. At a minimum it would be nice to simply crop the file or pull out a small section. I have tried cinelerra, LiVES, several transcode scripts and everything else I can find. I have had some luck with pulling audio from the file, but I have found nothing to work with the video.

Could someone please help me figure this out. A little more than try this program would be nice, although I would take that. This is about to make me pull my hair out!!

Thanks for the help!

PhilD

MasterC · 12-22-2004, 02:41 AM

I've pulled out segments using mencoder/mplayer quite easily. It's trying to figure out what frame(s) you want that seemed (for me) to be the hard part. I had to pause and play A LOT to grab the exact frames I wanted.

Another option is Kino (I prefer this for my digital video editing, and then I tweak the aspect/bitrate with mencoder).

Mencoder would be something like (this is just a weak example):
mencoder -ovc copy -oac copy -ss 1111

The -ss command seeks to the desired seconds to begin the cut. Check out the mplayer man page for ALOT more info (if you don't need to audio, you can even transform into jpg's and then use imagemagick to create an mng or gif to show the short flick).

Cool

PhilD · 12-22-2004, 07:44 AM

I will give that a try. So far, the programs I have tried seem to have problems with either the odd frame rate or the odd audio sampling.

I will be out of town for a week or so but I will let you know how it worked. Any other suggestions are alway welcome.

PhilD

danielson · 03-18-2006, 10:48 AM

Hi
I have a similar problem. I just can't edit my canon (Ixus 40) MJPG movies in Cinelerra. But I have ffmpeg installed and i can watch the the movies with mplayer and vlc. Does anybody know how you can make cinelerra use the right codecs with this format, so i can directly edit my clips in cinelerra without transcoding them first with mencoder? Or is this impossible?

To show movies in the web i recommend you the flash format, because almost everybody (Win, Mac and Linux) has it installed.
Here's our version of a Anything to Flash converter:
http://www.nyk.ch/cgi-bin/avi2flash.cgi
source: http://nyk.ch/code/avi2flash.cgi.html