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Trimming a video in Sony Vegas
I’ve tried trimming a large video file in Sony Vegas Platinum 11.0 with the intention of eliminating part of the file, i.e., reducing its size so it does not occupy as many gigabytes of hard disc space. I use the ‘Split’ function to do this. However, what happens is that a second file is created, much smaller in size, that apparently is a shell that just turns the original file on at a certain frame and off at a certain later frame. So I have more, not less, storage space taken up. Does anyone know if a ‘true’ trimming can be done that actually makes the original file smaller in size, and, if so, how to do it? I’m doing this on a VAIO SVS15118FXB laptop running Windows 7 x64.
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14 Replies
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[Harold Pohl] “Does anyone know if a ‘true’ trimming can be done that actually makes the original file smaller in size, and, if so, how to do it?”
No. Video edit is always “non-destructive” in any NLE that you use. This is done on purpose so that you can change your mind. 😉 Video editing requires large amounts of hard disk space. My recommendation would be to get a 1TB external hard drive and keep all of your video on that.
What you would need to do is render out the sections of video that you want to keep and then delete the original video from your hard drive. This is the only way to “trim” and only keep what you want.
You can do this easily in Sony Movie Studio Platinum 12 with the FasstApp Render Assistant add on. This will allow you to create regions around all of the section you want to keep and then render out just those regions to new files.
I realize you are using Movie Studio 11 but this might be a good reason to upgrade.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
John Rofrano,
Thanks for your clear and complete answer to my question. I’m new to this – just happened to find Sony Vegas on my new laptop and it looked interesting – so I had to look up definitions of ‘NLE’ and even ‘rendering’ to understand your answer. I have a big video file -about 13Gb – which is a Metropolitan Opera TV broadcast recorded from a Hauppauge USB tuner in MPEG-2.TS format. Unforunately, the recording did not stop at the end of the opera and it is about 6 Gb too long for my use. I thought, well let’s just see if this nice looking video editor can chop it down. First I found that Vegas Studio will not work on MPEG-2.TS files so I converted it to MPEG-2 and it did work. Then I used the split function to chop it in two at the end of the opera and simply cut the unwanted part, not realizing that NLE is non-destructive. For this simple operation I want to perform, it may be preferable to get a converter with a trimming function. However, I am now thinking about other things I might do with this program and maybe an upgrade would make it possible to do the trimming and a lot of other things.
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[Harold Pohl] “I have a big video file -about 13Gb – which is a Metropolitan Opera TV broadcast recorded from a Hauppauge USB tuner in MPEG-2.TS format.”
You might want to look into Womble MPEG Editor. It’s not the easiest program to use but it can split MPEG files and copy the sections without rendering. Womble is designed for what you want to do (put TV recordings on DVD) and may be a better workflow for that kind of work.
You also might want to look into the free tsMuxeR GUI. This is also not too easy to use but it will chop up Transport Streams (TS) without any rendering so you don’t loose any quality. I couldn’t find a good download site to point you to so be careful if you try and find it. Only download from a reputable site.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
John Rofrano,
Thanks very much for the suggestions. I will look into them. You are right that the main purpose would be to put the opera on removeable media after trimming it to remove the extraneous part at the end of the recording (and also possibly remove interviews between the acts).
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take a look at SolveigMM Video Splitter
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Aleksey Tarasov,
Thanks for your suggestion.
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John Rofrano,
tsMuxeR GUI chopped off the video nicely but I can’t find what it did with the audio.
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[Harold Pohl] “tsMuxeR GUI chopped off the video nicely but I can’t find what it did with the audio.”
Did it load the audio when you loaded the file? You should have seen that it loaded both the video and the audio. If it did not load the audio, then that’s why no audio is in the output. Usually this happens because you don’t have the correct audio codec installed to read the audio. Try and load the file into a free utility like MediaInfo or GSpot and see what codec the audio uses.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
In the tsMuxer GUI I don’t know if the audio file loaded. There are 3 files in the input box, the video and two files markedC Spanish & English. The Medianinfo description of the ts folder is:
Container & gen’l info
MPEG-TS 11.6 GB, 2h 52mn
1 video stream MPEG video
2 audio streams AC-3/AC-3
3 text streams EIA-608/EIA-708/EIA-708Can screen capture attachments be made to these messages?
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I really don’t know whst I’m talking about but tsMuxer GUI says on its About tab that it supports AC3 audio, and Mediainfo shows that the TS file I’m trying to trim has two AC3 audio streams. I don’t understand why they are not in the tsMuxer output file.
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