Nest the HD sequence into an SD sequence and scale the HD sequence to
fit. Export the SD sequence, making sure to check Maximum Quality
Rendering in the sequence settings.
I currently own a Canon 100f that records interlaced 1080i.
What kind of camera is that? Google does not show anything about that camera.
When I export however to a dvd compatible sd format, I have found that the footage looks really soft and the quality has degraded to look almost worse than SD.
It can never look better than SD if you export to SD format. What do you mean "almost worse"? Is it worse or not and how did you measure that, using resolution charts on a properly calibrated monitor?
I understand there is going to be loss in quality but surely the capture of HD and a wider colour space has got to look better?
What do you mean with a wider colour space?
So quick to criticize. A quick glance would have told you I meant to right the Hf100.
I have not used charts as such but my eyes as I find them a fairly good use of comparison.
As per the colour, I meant to say that the camera captures a wider range of colours as per model and not by video standard, though HD does have a different colour space http://www.glennchan.info/articles/technical/hd-versus-sd-color-space/hd-versus-sd-color-s pace.htm
Thanks. Found the camera and it is an AVCHD one. No wider colour range than any other AVCHD format, just standard, despite the link you gave.
Soft and unappealing are subjective statements. What you may be experiencing are the limitations of the AVCHD format, which is ONLY 4:2:0 encoding (nothing to do with your alleged so-called wider colour range), the encode settings for encoding to MPEG2-DVD or the fact that image quality can only be properly judged on a good external monitor, not on a PC screen.
This is not about being critical, it is about being unclear as to what you mean. I can't see your results, can't judge them and your message is open for wide interpretation.
You are on the right track. The color space for NTSC is 4:1:1 and SD DVD is 4:2:0 so when you go from DV to SD DVD the colorspace is still 4:1:1. However, when you go directly from AVCHD 4:2:0 to SD DVD the colorspace will be 4:2:2 and the color is much better (to me an a lot of other folks.) than DV to SD DVD. Downconverting with the Adobe encoder is not the best way to go and can account for some for your image degradation. I downconvert using the cineform codec as described here http://cineform.blogspot.com/2008/12/mastering-24p-dvds-from-hd-using.html You can use the vitualdub method if you don't want to use cinform.
Well we certainly can't rule out the application regardless of how detailed, or vague a statement is. I have experienced similar results when "scale to frame size" was selected in CS3. That was finally fixed with the release of CS4. With the Main Concept Transcoder, for all of us Panasonic AG-HMC150 camera owners, if you use their built in "convert to SD" function, the resulting video WILL be softer than if you scaled the video down manually. So there could definitely be a bug in the app, or it could just be an export setting. Just to be safe, the workaround I would suggest would be to manually scale down the HD footage to SD, then perform your SD export. Sometimes you just can't trust the software to do it for you.
Thank you very much for your advice, I hate to be subjective and I know it is far from accurate but I don't have the means for accurate interpretations and wasn't meaning to claim any sort of knowledge, only advice on what I can do to improve the quality of HD to sd and you've given me some really helpful advice to thank you!
p.s. just checked out the http://cineform.blogspot.com/2008/12/mastering-24p-dvds-from-hd-using.html and a lot of advice there seems very useful, I will try the method described and give my opinion on it. It's a shame theres is not better support for hd to sd conversion, though a process we should be avoiding, we are clearly going to be dealing with sd for the shorterm and many novices such as myself do not have a wide enough understanding and resources to produce good looking footage.
I have just used Dan Isaacs method and produced a great looking avi file. I then put this back into premiere pro for mpeg 2 conversion and the quality has become significantly poorer again. What is going on, my settings are minimum bitrate 1.5 target 6 and max 7.7 vbr and full quality. I am completely confused, I know mpeg-2 is lossy but this lossy? Something must be going wrong
I would not use AME.
Download Avisynth and some plugins from Dan's site and the HC encoder from the web.
Read the advanced options.
If you still want to use AME set avg bitrate to 7000 and max to 8500.
You might be able to go higher but that you have to try.
Hi Medi-ochre, did you resolve the bad quality DVD issue from Encore? Any workarounds?