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#16 |
Inner Circle
Join Date: Dec 2004
Location: Arlington, TX
Posts: 2,231
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On a related note, a Panasonic tech gave me some DOS commands to stitch together AVCHD clips from the HMC-150.
This did not re-encode anything, but was not instant as it seemingly had to go through the files bit by bit. This is for the PC btw. Here is what he sent: <Procedure to merge files> 1. Copy all divided files in a specific folder on the NTFS drive(ex. C:\AVCHD Temp) 2. If the divided files are 1000.m2ts, 1001.m2ts and 1002.m2ts, Run "copy /b 1000.m2ts+1001.m2ts+1002.m2ts AVCHDfile.m2ts" via [Command Prompt]. 3. Then divided files are merged into a single file (AVCHDfile.m2ts in the example). 4. Import the merged file into EDIUS. I then showed this and a member wrote a little utility with a windows interface that let one pick all of the files to merge and the choose a destination and filename. This is really useful for live events where the record is running for a while. One clip in the editor means one filter and adjustment application before cutting. Hope this helps. |
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#17 |
Regular Crew
Join Date: Jun 2007
Location: Los Angeles, CA U.S.A.
Posts: 146
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Tim -
Can you provide a link to the fellow's program? I'd like to test it. Ah. Did a little detective work and found it. Testing time. Last edited by Daniel Symmes; October 26th, 2009 at 10:52 AM. |
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#18 |
Regular Crew
Join Date: Nov 2008
Location: NYC
Posts: 121
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Thanks for all the info; I'll be testing it out later this week and see how it goes.
I could have sworn that all QT .mov files had header info, and so thought that a simple concatenation from the command line wouldn't work, but I'll be delighted to see that I was wrong. :) Or could it just be that QT can play the files and deal with a bunch of headers transparently to us... (Though running the files through MPEG Streamclip will take care of that, as will running them through FCP). I'll try combining both ways (command line and streamclip) and see if the output files are the same. Billy |
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#19 |
Major Player
Join Date: Jul 2009
Location: Rancho Santa Margarita
Posts: 590
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My initial testing shows the timecode is in the new file exactly how it should be. Which makes me question once again, if you would want to do this with files there were not a continuous shot.
Some software can not handle timecode breaks in the mpeg stream properly and if it could, would you want it to? I'll be combining files from continuous shots only. |
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#20 |
Regular Crew
Join Date: Nov 2008
Location: NYC
Posts: 121
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I have no intention of combining non-sequential files (not sure why you thought that was what I had in mind). What I was talking about was whether QT .mov files had headers, (I thought they did) and if so, how come concatenating smaller (sequential) files worked. If they do have headers, then QT is smart enought to be able to deal with multiple headers in a single file. More likely, QT doesn't have/need headers for this type of file. In any case:
I'll know more (maybe...) later this week. Billy |
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#21 |
Regular Crew
Join Date: Nov 2007
Location: Colorado Springs, CO
Posts: 65
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Hi,
perhaps I'm missing something, but I tried concatenating (gluing together) 2 Quicktime files with the terminal command line cat function, the result simply plays the 1st file and that's it, in Qt Player. Kind of what I expected, as each file has indexing info and a simple concatenation of files wouldn't account for this. I concatenated 2 mxf files and it wouldn't even open in XDCAM Viewer. I can believe that m2ts files (as mentioned above by Tim Polster) would concatenate successfully, since they don't have any indexing info in the file. The same is probably true of nanoFlash .MPG files. Tommy Schell |
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#22 | |
Major Player
Join Date: Jul 2009
Location: Rancho Santa Margarita
Posts: 590
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Quote:
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#23 |
Inner Circle
Join Date: Dec 2004
Location: Arlington, TX
Posts: 2,231
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So is there any hope of an MXF clip-join utility?
Bear in mind that this would only be useful if it is quick without needing to render anything. |
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#24 | |
Regular Crew
Join Date: Nov 2008
Location: NYC
Posts: 121
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Quote:
I also ran the files through MPEG Streamclip, and it was able to losslessly process the multiple clips into a single clip that Quicktime was happy with. (Use "Save As"). Examining the combined file with a hex editor revealed that MPEG Streamclip had done the right thing, with a single header defining the combined file properly, and no extra headers buried throughout the file. So I don't know exactly what Aaron is seeing, but all my testing shows that simply concatenating nano QT .mov files fdoes NOT work. Billy |
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