CompuServe Thread

Premiere & MMPro w/MJPEG

2 messages in this thread
#1705From: Sean FlanniganJan 8, 1995 10:25 PM
Thanks for your reply. >>1) What frame rate is set in the "make Movie options" Premiere tends to use only 15 fps which of course results in bumby pictures. 30 fps for NTSC (25 for PAL) should give better quality. << I'm using 30fps for everything. The quality of my professional video is very good, with the exception of the pulsing the I can see in the results I output to tape. >>2) Did you set anything in the "data rate" option ? Try to test the data transfer rate of your system within the MCI-device-Setup. Set the data rate according to this. A too high rate will make the PC to loose frames when loading. << I've played with the data rate and it does not seem to change my results. The only time I get the pulsing is when I use the professional video — consumer Video-8 and VHS do not cause the pulsing. >>What is a TBC ? << Time-based corrector. I can't get real technical on it as I'm more of a computer techie than a video techie, but it synchronizes the video signals I am sending from my professional decks to either my edit controller setup or to the MMPro. I needed it for the MMPro because the video was skewed to the right in the MMPro without it (from the pro decks, my VHS stuff was ok). >> What PC-equipement do you use ?<< I'm using a PCI, Pentium 90 from Gateway 2000. I have 32MB of RAM, 1 GB Fast-SCSI drive, Adaptec PCI Fast-SCSI controller, and a Diamond Stealth 64 PCI video board. My sound board is an Ensoniq (Sound Blaster compatible). >>Does "make movie" need every time several hours to create a movie ?<< I've experimented with this and it seems (based on a suggestion I received a couple of days ago) that the time needed to make movie depends heavily on: – your computer – whether you are consistent in your settings between capture and make movie, it seems if the setting are different, it takes longer to create the movie. – how "clean" your hard drive is >> when i capture a movie in 160 x 100 there are more lost frames than in 320 x 200. Did this happen to you too ?<< Sorry, I haven't used anything lower than 320×240. Hope this helps. Mike Roarty Multimedia Connection
#1754From: Frank MuslerJan 10, 1995 11:15 AM
Mike thank you for your annswer ! I feel a little under-powered with my 486 DX2 8 MB RAM 540 MB VLB HD. but a least its calculations are correct 😉 Something other i learned yesterday : I watched carefully on a AVI-Movie. Everytime the bumpers occured the HD was running. I think at least at my system its the synchronisation of the datastream which caused the bumpers. The data was loaded (slow down), then played from RAM (speeded up) , then the next data was loaded (slowed down)… => Every load one bumper. I skipped the Sawp-file and so (with only about 4 MB Ram) the HD was constantly running and the movie was suddenly more constant. (but a little slower) Even full screen was smooth. Perhaps its better not to speed up the system but to slow it down ? Perhaps the programmers of AVI-Playback systems (like Premiere) can do something about this ? (To learn the software to adjust the speed when playing from RAM and playing from HD ?) I think a little less playback speed in exchange for smoother pictures is acceptable !? greetings Frank Mussler