Try this:
http://www.videotoolshed.com/product/66/mp4-to-quicktime/3
You need to rename the files (see the manual), but just now as a test. (If
it works out i'll make it working without renaming)
It will paste all files in one QT on the same track. With a bit of luck
it'll work.
If not, you can always use a simple DOS append (copy/b *.mp4 newfile.mp4)
(perhaps you have to extract the essence first, but worth a try)
Bouke
VideoToolShed
van Oldenbarneveltstraat 33
6512 AS NIJMEGEN
The Netherlands
+31 24 3553311
www.videotoolshed.com
For large files:
http://dropbox.yousendit.com/BoukeVahl998172
----- Original Message -----
From: "wilsonchao" <wilsonchao@gmail.com>
To: <Avid-L2@yahoogroups.com>
Sent: Thursday, August 25, 2011 10:49 PM
Subject: [Avid-L2] AVCHD problem: Re-stitch chunked files?
I just ran into an odd problem & Google hasn't given me any answers.
Strangely enough, I can't even find any mention of this problem, so I'm
asking the Great Hive Mind:
I'm editing some video from a Panasonic GH2 DSLR. It's AVCHD, 1080 23.98p,
and I'm doing an import w. transcode to DNxHD 115 on a MC 5.5.2 on Windows.
Normally, everything works fine with clips of up to 20-25 minutes.
But the GH2 can record a single clip many hours long, by automatically
making successive 4GB chunk (just like a nanoFlash or a KiPro). And when
you import/transcode successive 4GB files and string them out in the
timeline, all the frames are there. But the first frame or two after the
cut often show macroblock errors. Visually, this looks sorta like an
uncorrectable dropout on a digital videotape, and it's always in areas of
motion or picture change. And even though it's just a frame or two, it's
really noticable, like a big honking dropout.
I'm guessing that the camera is *not* understanding the long-GOP cadence,
which *should* tell it to write a new chunk starting at an I-frame.
Instead, it's hitting the 4GB limit at a random frame, so the new chunk may
start with a P or B frame, which gives the macroblock errors. (BTW, the
successive chunks, played back in-camera, show no macroblock errors at the
file boundaries, so I know the original long-GOP data are all there.)
So I'm *guessing* that to solve this problem, I need a software tool that
does the following:
* Open up the 1st & 2nd files.
* Parse the encoded bitstream to find the first I-frame of the 2nd file.
* Re-write the 2nd file starting at the I-frame.
* Re-write the 1st file, with the orphaned P & B frames (from the 2nd file)
appended at the end, where they belong.
* Rinse & repeat wherever there's a 4GB break.
Anybody know of such a tool? Or any other solution?
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