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how to eliminate audio dropouts when using firestore & m2t
I recently recorded a concert with my Focus Enhancements firestore drive. The files were m2t and when on a Vegas 10c timeline there was an audio dropout whenever two files met (the firestore segments the long recording into 2GB clips). I Never had this problem when the files were AVI (DV NTSC).
It took me a while, but with the help of JVC customer service I was able to fix this problem. It requires that you combine the segmented clips in DOS, so try to remember the good old days.
Here is a copy of the help I received from JVC (The “DR-HD100” is JVC’s firestore drive made for them by Focus Enhancements):
“Due to FAT32 limitation, recordings made in the DR-HD100 (Optional external HDD) are
limited to 2GB file size. Approximately in recording minutes, DV is 9 minutes, 720p is 13
minutes, and 1080i is 9 minutes. To combine the clips into one file and eliminate the loss of
audio at the end of the clips follow the procedure below.
Solution:
Follow the procedure listed below to combine DR-HD100 HDV recording clips into one
complete clip.
Command example:
“copy /b 001.m2t+002.m2t v:\CompleteClip.m2t”
Detailed Steps:
The following assumes drive “V” is the destination video work drive, and the Firestore (DRHD100)
is drive “F”. Also the destination file will be named, “cam1.m2t”. Type the command,
without the quotes, so “command” is simply typed as command.
Important Note: The destination drive (V:) must be a non-FAT32 file format, such as NTFS1) Mount the Firestore to a Windows 2000/XP computer. Firestore normally mounts as drive “F”. Rename the folder with the video files to “fs” (just for simplicity).
2) Rename the video files to 001.m2t, 002.m2t, 003.m2t, 004.m2t, 005.m2t, 006.m2t and 007.m2t. This assures that they stay in order (just for simplicity).
3) Close the window and then click Start, Run and type “command” and press enter.
4) Next type “f:” and press enter. You should now be at the root directory of the Firestore drive.
5) Next type “cd fs” and press enter. You should now be at the “f:\fs” folder.
6) Next type “copy /b 001.m2t+002.m2t+003.m2t+004.m2t+005.m2t+006.m2t+007.m2t
v:\capture\cam1.m2t” and press enter. Be absolutely sure to include /b which is for
binary.
7. Import cam1.m2t into your NLE”Have fun, Robert
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3 Replies
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Interesting.
I was having the same problem with my Canon HG-10 hard disk camera. I might give this a try. I didn’t think of joining the files in good old DOS.
Is the join totally tranparent?
Intel i7 920, 12GB RAM, ASUS P6T, Vegas Pro 10 (x32/x64), Windows 7 x64 Ultimate, Vegas Production Assistant 1.0, VASST Ultimate S Pro 4.1, Neat Video Pro 2.6
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Yes, it is one big clip.
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I just recently tried this and couldn’t get it to work. Does it matter what OS is being used? I have tried on 2 computers. One that was using XP and another running Windows 7. Dos gives me a sytax error.
I’m usually using 2 cameras that start at different time so pulling audio from second camera when the first cam’s audio drops has worked in the past. However, this time I am stuck with sections where the audio has been “lost” during the end of one clip and the beginning of the next.
If there is another way to do this. Please let me know. Thank you!
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