Op ma 01-04-2002, om 04:18 schreef Scott T. Bowden: > The biggest problem is that if I record more than 2GB worth of data in one > file, the file becomes uneditable by glav. I know that there is a 2GB > limit on AVI files, and I also know that there does exist an extension to > the AVI specification that works around this. However, 'streamer' doesn't > seem to be able to write out files in this format (or, glav can't > recognize them, but I think that streamer isn't writing out the index on > the >2GB files correctly) No, this is a mjpegtools problem. It simply can't read files larger than 2 GB, it doesn't support the extension yet. I'm planning on integrating this after the 1.6.0 release (I've read the doco/xawtv code, so I know how to do it, but I don't want to do it right before a stable release...). > This is a problem mainly because, at 320x240, and mjpeg quality of 80, 1 > hour of video hovers right around the 2GB line. Sometimes it makes it > under, sometimes it doesn't, depending on what it was I was recording. So > the question is: does there exist a capture program that can write out AVI > files >2GB correctly? A corrolary to this: does there exist an editor that > can edit AVI files >2GB? If no to either of these, is there a capture > program that can write ANY video format >2GB, and is there an editor that > can edit said files? lavrec (part of mjpegtools) can capture video just like streamer, but will record to multiple < 2 GB files rather than to one big file: lavrec --software-encoding --geometry=352x288 --input=[nps] file-%02d.avi That will record video at a size of 352x288 from the first BTTV input (n for NTSC, p or PAL, s for SECAM) to file-00.avi, file-01.avi, etc. See 'man lavrec' for more information. It's included in the mjpegtools RPM distribution. > I attemped to capture to raw video/audio , but the YUV files created by > 'streamer' give the following error when I attempt to process them using > any of the YUV tools in the mjpegtools package: > > **ERROR: Could not read YUV4MPEG header: bad header magic! Correct, we've a 'new' YUV4MPEG format for 1.6.0. xawtv probably needs a small patch to support that. If xawtv hasn't been patched already, I'll make up a patch shortly. Gerd? > The second problem I'm having is just that for some reason, when I > capture, I have a black border on the left of each frame that is about 5% > of the width o the frame, and another, smaller border on the right side of > the frame, about 2% of the width of the frame. An example can be seen at > http://implausible.net/images/frame.jpg . Is there a way to fix this? It > isn't that big a deal, but it is slightly annoying. Capture to a somewhat larger size (384x288 or so) and cut (with yuvscaler or so) the borders away. See 'man yuvscaler' or ask on mjpeg-users@xxxxxxxxxxxxx Ronald -- - .-. - /V\ | Ronald Bultje <rbultje@xxxxxxxxxxxxxxxxxxx> - // \\ | Running: Linux 2.4.18-mdk6 and OpenBSD 3.0 - /( )\ | http://ronald.bitfreak.net/ - ^^-^^
