anyone know of a good stable mpeg4 decoder, preferably one thats open source and will work with Win32?
Printable View
anyone know of a good stable mpeg4 decoder, preferably one thats open source and will work with Win32?
mplayer decodes most MPEG4 codecs, is open-source and only ever crashes on incomplete movie files for me.
XviD - I use it for processing my videos and it's very good quality. This 2 1/2-minute video of a stunt I did in a game is compressed using the XviD codec (using a quality setting of 10). It's 428x300 resolution, 29.97 fps, and just under 7 MB in size. This is the codec and it's also open source.
Thanks, looks like Xvid might fit the bill. I gotta decode a raw mpeg4 stream in my app, cuz taking snapshots is just too low of a frame rate.
Xvid is a specific codec. It can't decode all MPEG4 streams.
libavifile is your best bet, I think.
well, I really just need to decode MJPEG to a series of jpg or bitmap images. Nothing fancy and Id prefer not having to fix someone elses code, like libavifile and Xvid both require.
Neither library requires that you "fix" anything. Where'd you get that idea?
Got that idea from the Xvid sources, which failed to compile with 6 errors and 11 warnings. Looks like they are doign some funny business trying to recast __int64's as doubles. I put in a workaroud for a few of them, ill get to the others later. The big issue is that since the errors are in a loop, my workaround ( which involves CopyMemory) will probably slow it down some. Not entirely sure why VC++ wont recast -
generates an error saying there is no type conversion from unsigned __int64 to double, try using signedCode:unsigned __int64 blah;
double foo;
foo = (double)blah;
Maybe
foo = (double) ( (signed __int64)blah );
yeah it still complains about that
This is because the Visual compiler is dumb and broken. I've seen it before. Just force it to signed. You say it still complains? Post the exact code.Quote:
Originally Posted by abachler
And exact error messages.