C100: Adobe will fix AVCHD bug in Premiere Pro CS6

M

mtnski

Active member
There is a well documented bug with editing long AVCHD clips in Premiere Pro. One of the affected camera is the C100. Adobe acknowledged the existence the bug some time ago and recommended transcoding files as a work around, http://helpx.adobe.com/premiere-pro/kb/audio-video-glitches-avchd.html.
Yesterday they final announced that they are committed to fixing the bug. Great news for C100 owners who want to edit the native footage!

From the Abobe blog, http://blogs.adobe.com/premierepro/

"Our commitment to customers includes those who haven’t yet subscribed
to Creative Cloud or who rely on CS6, and we plan to release an update
to Premiere Pro CS6 in the coming weeks that will address an AVCHD
clip spanning issue. For more information in video production and
Adobe Creative Cloud, go here."
 
I have stayed away from using the C100 because of all the issues and workarounds that have been talked about by various users. The way that Canon records the AVCHD clips is really a PITA. It is always great when a company (Adobe) acknowledges a bug and pledges to work on fixing it BUT, it has been my experience that you never know when the fix will finally come. I can't have clients getting pissed because of all the hassles they are having with files. There are several different problems with C100 files from clip spanning to the PsF method of recording files in an interlaced wrapper.

Yes, there are work arounds, but the editors that I know start telling producers that it is costing them money to deal with the issues. I hope that all the Editing software companies will find solutions in the future.
 
greenheron said:
I have stayed away from using the C100 because of all the issues and workarounds that have been talked about by various users. The way that Canon records the AVCHD clips is really a PITA. It is always great when a company (Adobe) acknowledges a bug and pledges to work on fixing it BUT, it has been my experience that you never know when the fix will finally come. I can't have clients getting pissed because of all the hassles they are having with files. There are several different problems with C100 files from clip spanning to the PsF method of recording files in an interlaced wrapper.

Yes, there are work arounds, but the editors that I know start telling producers that it is costing them money to deal with the issues. I hope that all the Editing software companies will find solutions in the future.
Click to expand...

The quickest workaround is just using Clipwrap to wrap each of the files into quicktimes, which effectively removes the interlaced wrapper. It's super fast and easy, it takes like 10 minutes to do a 32GB card. If a client doesn't want the huge files that are recorded to the Ninja2 (pro res or DNX) I run all my rushes through Clipwrap and hand off an SD card filled with the original QTs. It's really not that big of a deal. I will under no circumstance hand off an SD card with the original AVCHD file structure unless I know 100% my client knows what they are doing. Of course it's preferable to just hand off the drive straight out of the Ninja, but not everyone wants to deal with 500GBs of Pro Res files.
 
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I edited my first big C100 project in Premiere CS6 and didn't really see these issues. I imported the original files straight from the card broken up into 4-5 2GB clips. I imported all of these into Premiere and was surprised to find that the first clip that I dragged onto the timeline could stretch all the way to the end! I realized then that the AVCHD files were linked somehow....but I didn't understand how. I didn't need to drag all 4-5 split clips to complete it. Somehow the one file automatically linked to all.

I found this peculiar but other than that it worked fine. Was I just lucky?
 
I had some bad experiences with Clipwrap and C100 files back in the spring and gave up on it. Maybe it has solved those issues of hanging on some of the files. I'll give it a try again. I also think that Avid may have solved some of it's issues with the new release.
 
icicle22 said:
I edited my first big C100 project in Premiere CS6 and didn't really see these issues. I imported the original files straight from the card broken up into 4-5 2GB clips. I imported all of these into Premiere and was surprised to find that the first clip that I dragged onto the timeline could stretch all the way to the end! I realized then that the AVCHD files were linked somehow....but I didn't understand how. I didn't need to drag all 4-5 split clips to complete it. Somehow the one file automatically linked to all.

I found this peculiar but other than that it worked fine. Was I just lucky?
Click to expand...

I've never had any issues either funny enough. I still won't take any chances, and will continue to clipwrap the AVCHD rushes in the event the client doesn't want Pro Res. I've heard horror stories and we all know there's nothing worse than handing off your rushes and then getting that email back saying "WE CANT OPEN ANY OF THE FILES!!!".

I haven't had any issues with Clipwrap *knock on wood*. I keep it updated and the developer is really on top of fixing any bugs.
 
I've never had any issues...well, since I learned the proper way to import via Media Browser and interpret the footage correctly before I drag it to the timeline. I always use the AVCHD project preset and I'm CS6 on a PC (laptop).
 
mhood said:
I've never had any issues...well, since I learned the proper way to import via Media Browser and interpret the footage correctly before I drag it to the timeline. I always use the AVCHD project preset and I'm CS6 on a PC (laptop).
Click to expand...
I do the same but still have problems with some long clips. This is a well documented bug with PP. You are lucky if you have not struck it :-)
 
mtnski said:
I do the same but still have problems with some long clips. This is a well documented bug with PP. You are lucky if you have not struck it :-)
Click to expand...

Man, I sure hope reading this thread doesn't jinx me but I've worked with some pretty long files (i.e., > 90 minutes) without a single incident. I'm supposed to shoot four two hour sessions next week. Fingers crossed.
 
Does this explain why my audio drops out a lot when playing back AVCHD clips? It happens in Premiere Pro CC too.
 
draculr said:
Does this explain why my audio drops out a lot when playing back AVCHD clips? It happens in Premiere Pro CC too.
Click to expand...
I've noticed a few audio issues with Premiere Pro CC, one file today got stuck in a loop playing the same 1 second piece of audio continuously. I had to dig out the MTS file and import it from outside of the AVCHD file structure to get the audio to work correctly.
 
Matt Turner said:
I've noticed a few audio issues with Premiere Pro CC, one file today got stuck in a loop playing the same 1 second piece of audio continuously. I had to dig out the MTS file and import it from outside of the AVCHD file structure to get the audio to work correctly.
Click to expand...

Same thing happened to me! I was lucky enough to be using dual recording on the c100 and I grabbed the file from the second sd card and that one worked just fine.

I thought it it was a problem with my sd card but hearing someone else having a similar issue is slightly worrying.
 
Man, I'm glad I checked this forum today as I was JUST about to purchase some C100's for my business, and all we use is Premiere. However, most of our machines still use plain old vanilla Premiere CS5. Does anyone know if these glitches affect that too? We'd ideally like to just drag the raw clips in and edit- We turn videos around really fast so it'd be good to know!
 
draculr said:
Same thing happened to me! I was lucky enough to be using dual recording on the c100 and I grabbed the file from the second sd card and that one worked just fine.

I thought it it was a problem with my sd card but hearing someone else having a similar issue is slightly worrying.
Click to expand...

I had the same issue. And simply imported the same clip from my second card.

Still dont get why this happened
 
RoccoB64 said:
Man, I'm glad I checked this forum today as I was JUST about to purchase some C100's for my business, and all we use is Premiere. However, most of our machines still use plain old vanilla Premiere CS5. Does anyone know if these glitches affect that too? We'd ideally like to just drag the raw clips in and edit- We turn videos around really fast so it'd be good to know!
Click to expand...
Here is a discussion on the subject, some say CS5 is OK, http://forums.adobe.com/message/5337208#5337208#5337208.
 
I've tried the updated CS6 and still see a problem. When I look at the second clip in a pair of spanned clip (just looking at the .MTS file), the first frame or two show compression artifacts. And the last frame of the first clip can have the audio dropped out. I've tried transcoding to ProRes and it's worse.

My problem is that I did not discover this bug until after doing my usual AVCHD workflow with several shoots - copy the MTS files to my hard drive and rename, then back them up and reformat the SD cards (thus loosing the "PRIVATE" folder and all its contents). Is there another codec to transcode to that might fix the problem?

I have to wonder though, is this an Adobe bug or a Canon bug? I wonder if FCP or Avid users have the same problem?
 
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