Nice to hear. Finally someone with good editing results.
>> Rendering to H.264 is roughly 3-4 times slower than rendering MPEG-2
...hmmm... this brings me back to the question I just asked elsewhere, which is: How does one properly export AVCHD to H.264 for Blu-Ray without loss of quality? Being as AVCHD *is* H.264, shouldn't the "transcoding" here basically amount to copying the existing data? I'd expect it to be WAYYYYY faster than exporting to MPEG-2 :-/
3-4 times slower than MPEG-2 would basically be a non-starter for me; I have a quad-core box with 4Gb RAM, and it took nearly 8 hours to turn 45 minutes of AVCHD (no effects) into DVD MPEG-2. Source and target were both interlaced. Strangely, exporting the interlaced footage as progressive cut the time by more than half :-? I didn't care for the choppiness of the result, however.
> Strangely, exporting the interlaced footage as progressive cut the time by more than half :-?
Throw out half the vertical resolution and you only heed to work 50%.
>Being as AVCHD *is* H.264, shouldn't the "transcoding" here basically amount to copying the existing data?
Premiere hasn't has such abilities in the past. You've needed to add something like the MPEG plug-in from MainConcept to get what they call "smart rendering".
editing & exporting AVCHD to mpeg2 works fine. no doubt about it.
Now try exporting to QT. Or re-render the mpeg2 to QT.
amazing results, but not the ones you had in mind.
>> You've needed to add something like the MPEG plug-in from MainConcept to get what they call "smart rendering".
It doesn't appear that MainConcept produces any plug-ins for PPro CS4 (yet); MPEG Pro HD says "for Premiere Pro CS3 and 2.0" (or something like that).
hmmm... this brings me back to the question I just asked elsewhere, which is: How does one properly export AVCHD to H.264 for Blu-Ray without loss of quality?
see if this helps
It seems like the extra 4MBits/sec (total 21) from cameras like the HMC-150 is the deal breaker.
1) Your non quadro nvidia 9600 does not speed up avchd playback
2) more than 2 cores won't speed up playback of a single track
3) memory beyond 3gigs which your vista 64 OS is giving you won't speed up playback
it appears that vista 64 directx 10 must be what is enabling smooth avchd playback, which is puzzling. 2.4 gigahertz seems to slow. My dual core 2.4 gigaherz e6600 stutters. I am hoping that a quadro fx570 will enable me to play avchd 17Mb/sec AVCHD footage smoothly
Are you using Raid 0?
A RAID shouldn't be necessary for AVCHD. Even it's highest bitrate of 24 Mbps is less than DV's standard of 25 Mbps. The difficulty comes in the decompression, which is largely CPU intensive.
After some initial poor results, I got it to work. Have a core i7 965 extreme, 6 GB RAM, AT Radeon HD 4800 series (forget exact model) and Vista 64.
I was getting choppy playback/stuttering when I first attempted to work. A video would play fine for 2 or 3 seconds then start stuttering, or the picture would freeze and the audio would continue to play fine.
However, once I moved the media files to an internal SATA drive they played fine. I initially was attempting to play/edit from an external USB 2.0 drive as I normally do with SD material.
I can get 2 streams to play fine (PIP). But once I go to three tracks(two PIP's) it begins to stutter.
BTW, I'm using 24Mbit files from a Canon HF11.
Axel, it would have been interesting to compare your results editing native to what you would have had editing with Cineform Prospect HD.
exporting to apple proRes422 HQ seems to be the best quality export from AVCHD after playing around. but 1 minute is equivalent to 1.2 GB for prores. then saving space, i use H.264 from exporting with Quicktime Pro.
Here are some tests and raw files if anybody wants them. I'm going to do some testing, then post my results and system specs.
Don't forget to scan for viruses, just in case.
I have both a Canon HF11 and the new Panasonic HMC150. I've been getting system crashes (blue screen of death) when playing AVCHD clips from the HMC150, usually when I'm moving clips around or changing clip settings. This never happened when playing HF11 clips, so I'm wondering why that is?
My system is a Core i7 2.93Ghz, 6GB RAM, 4TB SATA, 1GB Nvidia GTX285, Windows Vista Home 64-bit (but it seems to be running in 32-bit...any suggestions on changing that as well?)