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Avid to Sorenson to Nero problem
Hi everyone. I posted this in DVD Authoring, but thought someone here may be able to help me out.
I’m burning DVDs with this process:1. Export 6 minture video from Avid Adrenaline as a quicktime Ref file.
2. Import to Sorenson 4 and squeeze: Program, MPEG-2(audio and video), 720,480, lower field first, bitrate at about 6700
3. Import to Nero and burn with the same settings.When I play the DVD, it looks fuzzy and flickery, like there’s a field problem, and at about 3 seconds after each chapter, the video stutters, then proceeds to play fine. What am I doing wrong? I noticed that Nero has a menu with compression settings like Sorenson. Is the video being compressed twice? Do I even need to use Sorenson to compress the video? And I even tried a lower bitrate of about 5500.
I have a deadline of this Tuesday to figure this out, so I appreciate any help.
Jim
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9 Replies
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What you may want to do is try using CBR (Constant Bit Rate) instead of VBR (Variable Bit Rate). I am not sure why, but I have had similar problems as you when I tried to encode my DVD Products with Sorenson’s VBR codec, but when I encode in CBR I have no problems. I usually set the CBR to 8500 kb/s for the video stream and the audio I encode in Premiere Pro to utilize the Minnetonka Dolby Digital Surround Sound encoder. Using anywhere from 224 to 320kb/s for audio in sorenson should work though.
That is my experience with Sorenson, Hopefully by using CBR, you will get a lot better result (If you are not using CBR already).
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Hey Michael thanks for the response. Yeah, I’m using CBR. I read that cropping 6 lines out of the 720×486 helps reduce the flicker, so I’ll try that too.
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if you worked in 1:1 you would want to use 720×486 as that is the Standard, but for DV the Resolution is only 720×480.
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Jim, we’ve had similar problems with the Avid QT Reference movie to Sorenson workflow. Stuttery, fielded looking video. There is a problem with either Avid’s QT Ref Mov or Sorenson or both; we have an elevated open case file with Avid about this problem. But we haven’t gotten any real responses about it. I author with Encore on my Adrenaline box. The only consistent workflow has been to print the final edit to tape, reload it into Adrenaline, and then use the reference movie from that sequence.
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We had a the same situation as maverick13’s on MCA v 12.0. I found when we used a QT movie instead of a reference it worked pretty well. Since moveing to Adrenaline we have been using QT reference with all effects rendered, to Sorenson, then to Encore and everything works great. Sometime’s using the “send to” function is a problem, but simply by exporting and then dropping into Sorenson for encoding there is no problem. Using VBR, 720 x 486. For what it’s worth…
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Thanks for the help guys. I’ll try your ideas. This would be soooo much easier if my company would’ve just got Premiere and Encore!
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I know u needed an answer before tuesday. but just incase u were wondering:
Yes, it is a field problem..
but no, it cannot be fixed with squeeze, encore, premiere, Canopus or Cleaner.All QT Ref files exported from Avid have no field dominance at all. that’s why ur picture is screwed. You have the option with normal QT exports, but not with reference files. Reference files are great for encoding to mpeg1, wmv’s, basically anything not designed for tv.
Try exporting as an AVI, or another file with field options then encoding from there.. Or onlining the project in a Symphony suite.
hope this helps. -
Thanks Andros. I tried exporting to AVI uncompressed but it stops after about 7% and says Unable to export bin, File size too large. My project is about 10 minutes. Any ideas? Thanks again.
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Ahh. I figured out you have to export in pieces if you want AVI uncompressed.
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