Re: [Frameworks] mov files from avid (pc) for quicktime projection (mac)

2014-07-16 Thread Scott Dorsey
As far as I can tell, if you are providing files to be shown at a 
festival or event, the only chance you have of getting an image on 
screen with the same basic grey scale you saw at home, without motion
artifacts, and without random failures, is to provide a DCP file.
I know it's ugly, but it's universal.
--scott
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Re: [Frameworks] mov files from avid (pc) for quicktime projection (mac)

2014-07-16 Thread ev petrol
thanks loads for the tips folks!
the H264 playback issue makes sense
i did some test exports to DV-DVCPRO-NTSC in the meantime (following another 
friend's advice), progressive  with deinterlacing
 they played back aok on the mac, in quicktime, with no interlacing
I'll give H264 a lash as well
much appreciated!
cheers moira

 
moiratierney.net
vimeo.com/moiratierney



On Wednesday, July 16, 2014 2:50 AM, Douglas eastshorefi...@hotmail.com wrote:
 


Try playing your files on VLC player, it's freeware and may work just fine. I 
wouldn't recommend h.264 since it's heavily compressed. 

dK





 On Jul 15, 2014, at 5:52 PM, Dave Tetzlaff djte...@gmail.com wrote:
 
 I'm not an Avid expert, but I know they typically use proprietary codecs. 
 What container were they in? AVI? 
 
 If QT can't play the files, that could either be an issue with the codec per 
 se, or your Mac not being equipped with the extra widgets needed to handle 
 the headers of PC-based containers.
 
 All H.264 encoding software is not created equal. Use x264, which is freeware 
 available as a stand-alone plug-in that works with stuff like MPEG 
 Streamclip, and also comes built-in with recent versions of Handbrake (also 
 freeware). There are more tweaks available in the interface than Carter has 
 pills. I've never had any odd color or contrast problems using the presets 
 (since the individual setting parameters are mostly WAY over my head), but if 
 you did get results you don't like, you could probably find a setting that 
 would do the trick if you got under the hood far enough.
 
 Anyway, as Aaron said, the problem may be the playback software, not the 
 files you've generated themselves. I agree with Aaron that H.264 is usually 
 the best thing to send out, if only due to file size. For shorter pieces, I'd 
 use ProRes if the venue accepts it. For the H.264, I recommend putting it in 
 an .mp4 container, as that's more universal than .mov .avi .mkv etc. etc.
 
 
 tested some mov files today (exported 'same as source' from avid 3.0 on a 
 pc) on a mac, quicktime wouldn't open them  vlc played them back 
 deinterlaced ( with a green line at the top, in one case)
 any ideas what's up?
 
 i've tried H264 exports but the colours/contrast get washed out, so i'm 
 avoiding that option; thought that 'same as source' would be better than any 
 form of compression ...?
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Re: [Frameworks] mov files from avid (pc) for quicktime projection (mac)

2014-07-15 Thread Aaron F. Ross
Same as source means that your footage is encoded with the same 
codec as your original footage, or perhaps the intermediate editing 
codec you've chosen in your timeline/sequence.


H.264 is actually your best option for festivals. The contrast issue 
is a bug in some versions of Quicktime and VLC for Windows. It 
happens because some clever broadcast engineers decided that the 
range of an 8-bit channel should be from 16 to 235, instead of the 
full range from 0 to 255. The encoder is supposed to restrict video 
levels to 16-235 (Studio IRE) at export time, and the decoder is 
supposed to expand those levels back to 0-255 at playback time. But 
sometimes the decoder does not expand the levels, and you get dark 
gray blacks and light gray whites.


On Windows you can fix this playback issue through the NVIDIA control 
panel (if you've got it). But it's almost certain that the venue will 
be playing back on OS X. Provided that the OS and Quicktime are up to 
date on that system, then your levels will be displayed correctly.


If you really don't trust H.264, then you can export to DNxHD, but 
there's an extremely low probability that your festival can actually 
play this back. The Animation codec is lossless if you crank the 
quality up to 100%, but then the file sizes are ginormous.


Bottom line: encode to H.264 at the bitrate appropriate to your 
format, and take it on faith that it will play back with the correct 
levels. I've been through this a zillion times; video editing on 
Windows is still markedly inferior to OS X, even after decades.


Aaron




At 7/14/2014, you wrote:

hey folks

tested some mov files today (exported 'same as source' from avid 3.0 
on a pc) on a mac, quicktime wouldn't open them  vlc played them 
back deinterlaced ( with a green line at the top, in one case)

any ideas what's up?

(cue bad jokes about 'mov'ing targets or 'mov'ing goalposts ...)

i've tried H264 exports but the colours/contrast get washed out, so 
i'm avoiding that option; thought that 'same as source' would be 
better than any form of compression ...?


cheers all round
moira

moiratierney.net
vimeo.com/moiratierney
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--

  Aaron F. Ross, artist and educator
  http://dr-yo.com
  http://digitalartsguild.com

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Re: [Frameworks] mov files from avid (pc) for quicktime projection (mac)

2014-07-15 Thread Dave Tetzlaff
I'm not an Avid expert, but I know they typically use proprietary codecs. What 
container were they in? AVI? 

If QT can't play the files, that could either be an issue with the codec per 
se, or your Mac not being equipped with the extra widgets needed to handle the 
headers of PC-based containers.

All H.264 encoding software is not created equal. Use x264, which is freeware 
available as a stand-alone plug-in that works with stuff like MPEG Streamclip, 
and also comes built-in with recent versions of Handbrake (also freeware). 
There are more tweaks available in the interface than Carter has pills. I've 
never had any odd color or contrast problems using the presets (since the 
individual setting parameters are mostly WAY over my head), but if you did get 
results you don't like, you could probably find a setting that would do the 
trick if you got under the hood far enough.

Anyway, as Aaron said, the problem may be the playback software, not the files 
you've generated themselves. I agree with Aaron that H.264 is usually the best 
thing to send out, if only due to file size. For shorter pieces, I'd use ProRes 
if the venue accepts it. For the H.264, I recommend putting it in an .mp4 
container, as that's more universal than .mov .avi .mkv etc. etc.


 tested some mov files today (exported 'same as source' from avid 3.0 on a pc) 
 on a mac, quicktime wouldn't open them  vlc played them back deinterlaced ( 
 with a green line at the top, in one case)
 any ideas what's up?
 
 i've tried H264 exports but the colours/contrast get washed out, so i'm 
 avoiding that option; thought that 'same as source' would be better than any 
 form of compression ...?
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