8.0c AVCHD Render Crashing Tip at DVinfo.net

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What Happens in Vegas...
...stays in Vegas! This PC-based editing app is a safe bet with these tips.

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Old February 4th, 2010, 10:24 AM   #1
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Join Date: Feb 2007
Location: Wichita, Kansas
Posts: 23
8.0c AVCHD Render Crashing Tip

I have used various versions of Vegas Pro for many years and never had any serious issues, nor any crashes. But, along comes big AVCHD (mts) files from an HMC-150, and WHAM! System crashes randomly, and cannot get past 11% render without crashing. Sometimes Vegas would just crash and disappear without even leaving a smoke trail! Yeah, I tried the 9 demo and didn't find anything I needed with it at the time (did not try AVCHD problem).

Of course you read all the forums and everyone has their own theories about how to fix it or make it a little better (clean installs, blah, blah...). I spent several days researching the problem above and found at least 20 different things to try out. Only in several of these things did anyone post positive and conclusive results (ie. no crashing, faster performance, etc.).

To make a long story short, I found a tip on another forum that I thought may be beneficial to the many users here.

Disclaimer: This worked for me and many others, but like all forum advice, your mileage may vary. This involves minor modifications to executable files, and you should make backups of originals in a safe place.

Utilizing AVCHD (M2T & MTS files) seems to cause some memory usage issues in Vegas. Many 32 bit EXE and DLL files (including Vegas 8.0c) have a 2GB maximum memory cap. Using CFF EXPLORER (free download - google it up) you can easily open the EXE or DLL files and click the 2GB memory switch that allows the programs to use more than 2GB.

The following files should have this switch set to allow more than 2GB memory usage (provided that you are running a multi-core system with 6GB or more memory).

m2tsplug.dll (file i/o)
mcstdh264dec.dll (file i/o)

1. Make backup copies of each of the files (okay to make a new backup folder within the program directories), and replace the extensions with .bak.
2. Download CFF EXPLORER (NTCore's Homepage) and install and run.
3. From the menu, select File/Open.
4. Select file to be modified from above list in the explorer window and open.
5. In the left window of CFF EXPLORER you should see “NT HEADER”…”DOS HEADER”… etc
6. Highlight “File Header” under “NT HEADER”
7. In the right window of CFF EXPLORER you’ll see a chart of various parameters. On the bottom right corner of this chart you will see “CLICK HERE”. Click on that and a check box system menu will open for that file.
8. On the menu list you will see a check box for “app can handle > 2gig address space”. Check that box.
9. Please note that you are modifying contents of executable files here (so make sure you have made backups!). Save and close the file, and repeat for remaining files above.

My system: Core i7 920, mild o'clk to 2.9 on MSI mboard, 6GB RAM, MSI nVidia 9800GT, Vista64.

I am happy to report that after making these modifications, I have not had another render crash with AVCHD (mts) in my timeline. I just rendered 75 minute 2 camera project, 1920 x 1080 down to mpg2 for DVD widescreen. Had color correction and a few jpgs scattered about. Before the mods, I could not render more than 3% of this project at a time without Vegas totally crashing. This also rendered in about 75 minutes! (single pass, VBR, best quality).

Hopefully this will help others that have the same problem that I had.

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