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Unofficial VirtualDub Support Forums > Codec Discussion > Libjpeg-turbo/turbojpeg Support

Posted by: zcream Dec 17 2013, 06:06 AM

Has anyone tried to include libjpeg-turbo/TurboJPEG support within virtualdub ?
I want to record 2x streams of 3K video in realtime - and this seems like a good candidate.

Posted by: raffriff42 Jan 27 2014, 03:33 AM

Hi zcream, this library sounds interesting - although compiled-in support for it in VirtualDub is unlikely to happen. Someone would have to create a Video for Windows wrapper - that writes AVI files, since libjeg-turbo only writes images. The JPEG images *should* be muxable into an MJPEG AVI stream.

If external encoders become available in capture mode, there might be a way to use the command line cjpeg.exe:

CODE

Virtualdub.exe > BMP sequence > cjpeg.exe > JPEG sequence > ffmpeg.exe: mux to MJPEG AVI

But wait - why not try doing everything with command line tools? http://www.ffmpeg.org/ffmpeg-devices.html#Examples-8:

CODE

device > ffmpeg.exe: capture > BMP sequence on RAMdisk > cjpeg.exe > JPEG sequence > ffmpeg.exe: mux to MJPEG AVI

However moving all that data between processes might be slow; it might be faster to do everything with ffmpeg:

CODE

device > ffmpeg.exe: capture & write AVI

(for max speed you may want some other codec such as FFvHuff)

...just thinking out loud here...