feature idea: "libavsource"

[Mug Funky]

i was just installing mplayer in the hope that i could make it load 8-bit 2vuy QT files (apparently there's a patch) and turn them into huffy, when i wondered if there was any reason to not just build a plugin of libavcodec...

anyone think this would be cool? if you've got a quicktime or flash video or something else not easily decodable, just go "libavsource("blah.mov")" and you'll have the correct stuff without having to convert often massive files to avi (or serve them through VFAPI/premiere and suffer the colourspace conversion).

i always say this - i'd code it myself but don't know how... one of these days i'll do it :(

so anyway: is this a good idea?

[IanB]

Y E S

[Mug Funky]

hehe.. i take that as a vote of confidence... thanks.

although, that said, i can't actually decode 2vuy in mplayer :( that's a different problem though (kinda sorta solved by -ovc copy, but it skips frames)

[d'Oursse]

in avisynth 3.0, the gstreamersource uses ffmpeg (i.e. libavcodec) to decode the streams . It also should work on windows, as gstreamer can be installed on this platform (with a lot of courage and patience).
Maybe there will be a problem with those strange colorspaces, but then, it suffices to add them in avs3

[Mug Funky]

2vuy isn't a strange colourspace - it's a pretty standard one.

what i've been trying to do for a while now is be able to get these blackmagic mov files into avisynth without a colourspace conversion. premiere pro _shouldn't_ do this but clearly does (it just sucks so bad), and VFAPI->avisynth works only in RGB24. there's no point working on uncompressed 4:2:2 sources when the colours end up messed (well, there still is a point, but it's diminished slightly).

hehe... i eagerly await avs 3.0, which by all accounts is going to kick even more bottom than avs 2.5x.

[peter100m]

as IanB said:
YES! Definately a good idea.

I too get Blackmagic and AJA QT movs which needs to be loaded with Avisynth.
And QTreader isnt good enough...

@Mug Funky:
I'm a DVD author in Sweden, doing video cleaning with Avisynth. I guess you're doing the same? It would be interesting to exchange experiences with you. Discuss workflow etc.
Those Blackmagic QT files e.g., do you use them as sources in Avisynth (for actual productions) and if so, how do you use them? I use the QT files with QTreader but haven't got around the colorspace conversion... (which makes it not as fun as it should be). One solution would be an external Huffyuv-codec to the AVI-export feature in Quicktime Player to export anything else than RGB.. But as you said: the idea is to not having to export anything.

[AVIL]

Hi all,

I usually process MOV files with DIRECTSHOWSOURCE. I have installed QuickTime Alternative (free).

Bye