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6th March 2006, 15:48 | #1 | Link |
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trying to store jpeg frames out of a mjpeg avi
Hi,
i am looking for a way to generate an image sequence from a motion jpeg avi without transcoding the actual frame but simply storing it with the correct header to make it a jpeg image. as i understand this should be possible with motion jpeg, since it is an i-frame only jpeg format and actually the avi simply contains a series of jpegs. i was hoping to find a solution with avisynth but i couldn't. is there any or does anybody have a better idea? regards,
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7th March 2006, 01:46 | #3 | Link |
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thx for the reply, richard.
as far as i can see the mentioned page doesn't really say that the images are not transcoded. how did you come to that conclusion?
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9th March 2006, 18:53 | #8 | Link |
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try this first alpha release: mjpeg2jpg.zip
Its a command line tool. Use it this way: mjpeg2jpg filename.avi the fileextension is not important. The output dir is always "c:\". I will make that more user friendly in the future. hanfrunz |
13th March 2006, 01:42 | #10 | Link |
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my dosbox tells tells me:
The system cannot execute the specified program i ran it from inside its own folder on the desktop, fails with or without an avi given on the commandline.
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13th March 2006, 09:08 | #12 | Link | |
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Quote:
i will recompile at home with vc7. hanfrunz |
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16th March 2006, 23:04 | #13 | Link |
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i don't get emails anymore, when u answer, so i am sorry for the delay of my writing..
yes, i do have .net installed.. did you recomple it meanwhile? i'd still be very interested. regards..
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20th March 2006, 08:19 | #16 | Link | |
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Quote:
hanfrunz EDIT: here's a new version. It reads 1MB blocks instead of single bytes from the source file. Should be a lot faster now. EDIT2: i found some strange bugs... please use version 1 until i fixed them EDIT3: okay here is version 0.3 it's fast and has no memory-bugs. Last edited by hanfrunz; 20th March 2006 at 23:07. |
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