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Exporting with the highest quality
Friends I need your help!
I am trying to export my first film which I shot with Canon XHA1 (1440×1080, 25fps). but it lasts forever!! XHA1 image has a 25 kbps data rate. so for my Master (not web) version I intend to keep the data rate at least 25 kbps. but it takes around 23 hours!!! what should I do??!!!
what are your thoughts about it? what are the solutions?
and somebody told me that I should change the 1440×1080 to 1920×1080? is that true? why?—————–
1. shot with XHA1 25fps, 1440×1080; I am keeping all this for the export also
2. I even did not click render at maximum quality!
3. H.264, premiere pro 5.5
4. did the grading with MB Looks
5. Intel i7; 8mb Ram -
6 Replies
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Hi Milad,
23 hours is very long for an i7 – I can only wonder if the MB Looks are adding a large amount of processing time? I have an older Core i7-2600 and H.264 exports from HDV don’t take much longer than realtime, maybe up to 1.5x at most.
Sounds like you wish to have a high-quality “master” for archival purposes, right? Are you on Mac or PC? For PC, use an .avi codec such as Lagarith, UT, or Avid DNxHD. All are free and produce a “lossless” quality. From this “Master” file, you can later export to any other format as needed.
H.264 is highly compressed, then if you want to export to another compressed format, it is getting recompressed, so not the best mastering format.
Thank you
Jeff Pulera
Safe Harbor Computers -
Yes, Magic Bullet Looks is a complex effect to render and it will affect your export time…(make sure your MB Looks is up-to-date BTW).
You’re starting with HDV MPEG2 and exporting to MPEG4…if you select “Match Sequence Settings” in the export dialog, it should at least cut down a bit on the export time as at least you can reduce the compression complexity if not the effects rendering time.
You don’t mention what sort of display card you have…CUDA would help somewhat, but MB Looks itself is OpenGL accelerated I believe (like Colorista), so a strong display card should at least make the process as efficient as it can be…
TimK,
Director, Consultant
Kolb Productions,Adobe Certified Instructor
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Hi Jeff
Thank you very much for responding.
Yes, I would like to have a great master copy.
but for example I want to show my film in the university screening room. or send to some little festivals. in that case what would you recommend?
h.264 ?and you know my another problem is that Canon XHA1 footage has 25 kbps data rate. when I set the export target bit rate on 26 kbps. the file ends up being 9 GB!
what should I do?!
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Hi Tim
Thank you very much for responding.
I have read that “Match Sequence Settings” is not recommended. and I thought MPEG4 has a better quality than MPEG2. am I right?
for example I want to show my film in the university screening room. or send it to some little festivals. in that case what would you recommend? h.264 ?
and you know my another big problem is that Canon XHA1 footage has 25 kbps data rate. when I set the export target bit rate on 26 kbps. the file ends up being 9 GB!
what should I do?!
Thanks!
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Hi Milad,
You are correct that H.264 is better than MPEG-2 – it is a more efficient codec, therefore you can use less than 25mbps with H.264 and equal the quality of the HDV Long-GOP MPEG-2 at 25mbps. You may wish to render as 1920×1080 rather than anamorphic 1440×1080 size.
For screenings, see if they will accept Blu-ray. Otherwise, H.264 might be an option for computer playback if you create an .mp4 file, and you may be able to use a lower datarate such as 15 or 20. You could even try a YouTube or Vimeo preset and see how that looks if file size is a major concern.
Thank you
Jeff Pulera
Safe Harbor Computers -
I appreciate your precious help.
Thanks!
Milad
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