Ralph Gould
Forum Replies Created
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Thanks Richard. It would seem that Adobe doen’t understand that the LFE should only go to other channels in stereo downmix. Maybe they will read this and fix it.
Ralph -
I had an engineer from Adobe contact me after I sent the vectorscope screen shots to him in October 2010. He said it is a bug in the way Premiere is handling the file from Illustrator. I spoke with him last week. They were supposed to fix in CS 5.5, but the fix has been put off until another version. The group delay will be in all images created in Illustrator and placed in Premier. Probably not an issue with most production work, but it should be fixed.
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Vince,
I used the rectangle tool to build the color bars in Illustrator originally. I then placed the drawing into Premiere, and rendered it as a 30 second clip. I have tried converting it to MPEG2 and MPEG 2 Blue Ray with the same results. The group delay seems to vary between different colors related to the video formats. It will be worse between say red and magenta in 1080I/29.97 than it is in 720P/59.94. I’m stumped at this point. I’d be curious if this was fixed in CS5.
Ralph -
Vincent,
I am in RGB mode and have tried this with the Adobe 98 color setting and the sRGB color setting. The colors are always in the boxes, but I see the curvature of the vectors connecting the boxes. I wish Adobe had a real tech contact address, I’d just like to know if its a known issue and if there is a way around it. Like I said in the first post, its probably not a problem for most production folks. It does seem strange that Adobe would not correct the problem. I tried posting the issue on their site with screenshots and never had any response. Thanks for your help. -
Vincent,
I’ve tried twice to upload the image with the link and neither attempt has shown up. I’m unclear whether I get the link to place in the post from the “embed” or the “link” boxes. -
Vincent,
Here is a screenshot of my vectorscope looking at the Illustrator bars converted to video by Premier.
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Vincent,
I have screenshots of my vectorscope I can upload, can I place them on this forum? -
I tried creating color bars in Photoshop, then sending the file to Premier. I made an MPEG 2 stream with Encore. The curvature due to delay is still there, but takes place on different vectors. I played the stream with VLC, Windows Media, and after converting the elementary stream to a transport stream, through a hardware decoder. The curvature was there in all three cases. Since it doesn’t happen when I capture a frame of video from a Tek HD-SDI video generator and send it to Premiere, it seems it has to be in the way Adobe handles the colors. Does anyone have a way to contact Adobe directly about this to detirmine if this is a know bug?
Thanks