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trying to manage a big project - and trim lots of huge files into smaller chunks... save and copy/trim doesn't work

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Jason Merrill
trying to manage a big project - and trim lots of huge files into smaller chunks... save and copy/trim doesn't work
on Aug 8, 2014 at 4:08:28 pm

So, I have a massive project I am getting together, which takes stuff from some pretty huge clips (all about 4 gb each) and uses maybe a small portion (5-10 seconds) of them.

I want to save and trim these files into a new folder so I can color them in photoshop (yes I work on color on my video in photoshop lol), but I would really like to not have to process the entire file.

So I want a way where I can trim my files and then re-save the project (without destroying the source files, leaving them in the backup archive) into a new folder of usable clips which I will process.

When I do an archive (using export) it doesn't do this.
when I do a save as and copy media and trim unused, it doesnt do this.

in both of these instances it copies the entire file over again.

How do I prevent this in my future workflow

and how do I preserve these current edits whilst making a new copy of this project and its media?


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Norman Black
Re: trying to manage a big project - and trim lots of huge files into smaller chunks... save and copy/trim doesn't work
on Aug 8, 2014 at 4:41:28 pm
Last Edited By Norman Black on Aug 8, 2014 at 4:45:00 pm

You never mentioned what the specifics of your media file(s).

To quote the Vegas help file.
"Audio/video events are saved in a new AVI file. You can trim DV AVI, uncompressed AVI, and Sony YUV AVI files. Because of the lossy nature of other video formats, those video files will not be trimmed, but will simply be copied to the project folder."

http://www.sonycreativesoftware.com/webhelp/vegaspro/13/ENU/index.htm#SaveA...

Depending on your file specific there are tools out there that can trim LongGOP compressed files without re-encoding. The trims are restricted to I-frame boundaries.
Avidemux is one such tool and it is free.

You can trim your large media and use those trimmed results in your NLE.


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Jason Merrill
Re: trying to manage a big project - and trim lots of huge files into smaller chunks... save and copy/trim doesn't work
on Aug 8, 2014 at 10:02:13 pm

The formats are .Mov and .Mp4 - obviously lossy and not compatible with this function.

what would be the best way to trim these down manually? I could go through each one and make a subclip, no?

thank you for your help.


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Norman Black
Re: trying to manage a big project - and trim lots of huge files into smaller chunks... save and copy/trim doesn't work
on Aug 8, 2014 at 10:58:19 pm
Last Edited By Norman Black on Aug 8, 2014 at 10:59:34 pm

As stated tools like Avidemux can help. TMPGenc Smart renderer is another tool, but not free. There are probably others but I do not know about them.

If you want to take a large file a trim out one or more short pieces to separate files, use a trimming tool like Avidemux. Now you have the small pieces you want to edit in Vegas and/or Photoshop.

Avidemux only handles a limited number of file types. MP4 is your likely main output option here. No MOV option. Vegas only handles mpeg-2 and AVC/H.264 in MP4 files. I don't know what codecs are in your MP4 and MOV files. You never mentioned.

MP4 and MOV can contain everything from lossy to lossless codecs. They are just generic containers.

Another workflow is to trim out the unwanted stuff and render those pieces out, from Vegas, to a high quality intermediate format like DNxHD, Cineform, XAVC. Use those pieces in your editing. Then going back and forth between Vegas and other tools you don't have to worry about quality losses from re-encodes.


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Jason Merrill
Re: trying to manage a big project - and trim lots of huge files into smaller chunks... save and copy/trim doesn't work
on Aug 8, 2014 at 11:29:20 pm

what is a good format to convert to which will not affect the quality too much?

Right now, this is the info I have:

on one type of file:

Format : MPEG-4
Format profile : QuickTime
Codec ID : qt
File size : 142 MiB
Duration : 18s 685ms
Overall bit rate : 63.7 Mbps
Encoded date : UTC 2012-05-21 01:00:53
Tagged date : UTC 2012-05-21 01:00:53
com.apple.quicktime.make : Canon
com.apple.quicktime.model : Canon EOS REBEL T4i

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L5.0
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=12
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 18s 685ms
Bit rate : 62.1 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Original height : 1 088 pixels
Display aspect ratio : 16:9
Original display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 1.248
Stream size : 138 MiB (97%)
Language : English
Encoded date : UTC 2012-05-21 01:00:53
Tagged date : UTC 2012-05-21 01:00:53
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : PCM
Format settings, Endianness : Little
Format settings, Sign : Signed
Codec ID : sowt
Duration : 18s 685ms
Bit rate mode : Constant
Bit rate : 1 536 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 3.42 MiB (2%)
Language : English
Encoded date : UTC 2012-05-21 01:00:53
Tagged date : UTC 2012-05-21 01:00:53

on another:

Format : MPEG-4
Format profile : QuickTime
Codec ID : qt
File size : 107 MiB
Duration : 19s 353ms
Overall bit rate : 46.3 Mbps
Encoded date : UTC 2014-07-03 23:53:52
Tagged date : UTC 2014-07-03 23:53:52

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L5.0
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=15
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 19s 353ms
Bit rate : 44.7 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Original height : 1 088 pixels
Display aspect ratio : 16:9
Original display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.720
Stream size : 103 MiB (97%)
Language : English
Encoded date : UTC 2014-07-03 23:53:52
Tagged date : UTC 2014-07-03 23:53:52
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.601

Audio
ID : 2
Format : PCM
Format settings, Endianness : Little
Format settings, Sign : Signed
Codec ID : sowt
Duration : 19s 353ms
Bit rate mode : Constant
Bit rate : 1 536 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 3.54 MiB (3%)
Language : English
Encoded date : UTC 2014-07-03 23:53:52
Tagged date : UTC 2014-07-03 23:53:52


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Jason Merrill
Re: trying to manage a big project - and trim lots of huge files into smaller chunks... save and copy/trim doesn't work
on Aug 9, 2014 at 4:37:42 pm

How would I do that workflow wise?

what is a good format to convert to which will not affect the quality too much?

Right now, this is the info I have:

on one type of file:

Format : MPEG-4
Format profile : QuickTime
Codec ID : qt
File size : 142 MiB
Duration : 18s 685ms
Overall bit rate : 63.7 Mbps
Encoded date : UTC 2012-05-21 01:00:53
Tagged date : UTC 2012-05-21 01:00:53
com.apple.quicktime.make : Canon
com.apple.quicktime.model : Canon EOS REBEL T4i

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L5.0
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=12
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 18s 685ms
Bit rate : 62.1 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Original height : 1 088 pixels
Display aspect ratio : 16:9
Original display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 1.248
Stream size : 138 MiB (97%)
Language : English
Encoded date : UTC 2012-05-21 01:00:53
Tagged date : UTC 2012-05-21 01:00:53
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : PCM
Format settings, Endianness : Little
Format settings, Sign : Signed
Codec ID : sowt
Duration : 18s 685ms
Bit rate mode : Constant
Bit rate : 1 536 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 3.42 MiB (2%)
Language : English
Encoded date : UTC 2012-05-21 01:00:53
Tagged date : UTC 2012-05-21 01:00:53

on another:


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Stephen Mann
Re: trying to manage a big project - and trim lots of huge files into smaller chunks... save and copy/trim doesn't work
on Aug 9, 2014 at 2:45:29 am

Subclips don't exist.
A subclip is just an in/out pointer to your project's media. It does not exist outside of Vegas.

Steve Mann
MannMade Digital Video
http://www.mmdv.com


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