This IS the Avid L2: Re: [Avid-L2] Dealing with duplicate clip naming with AVCHD cameras.

Had a chance to do a bit of testing, and figured I'd report the results...

Unfortunately assigning tapenames to AMA clips doesn't work for my
current project. From what I read, this doesn't work in projects with
film options enabled. Attempting to modify the source produces an error
message about having to unlink the clip first. If I do unlink and
assign a tape name, the clip can no longer be relinked back to its AMA
source.

Clipwrap looks like a more robust solution for my purposes. Seems like
Clipwrap can rewrap the AVCHD streams as quicktimes (ie. no
recompression), while preserving timecode and dealing properly with
spanned clips. Those quicktimes can then be easily renamed to
incorporate a unique cardname, brought into Avid via AMA, and transcoded
as necessary.

The Clipwrapped AMA clips don't play back smoothly on my system
(Symphony 6.0.3, OS 10.7.4, 2.24 GHz quad-core intel xeon, 24 GB RAM),
but once transcoded they appear fine.

Has anyone run into any issues using Clipwrap in this way?

Thanks,
--Michael

On 13-01-16 11:31 PM, namyrb wrote:
> You shouldn't have any problems. If you do then you can give your AMA
> clips tape names when you get to the uprez/online stage and everything
> should link. Finished a show a few months ago, completely filebased while
> using tape names. That was on MC4. But like I said, you can give the
> clips custom bin columns.
>
>
> On Wed, Jan 16, 2013 at 11:25 PM, Michael Brockington brocking@sfu.ca>wrote:
>
>> **
>>
>>
>> Thanks for this suggestion, Wilson. I did some testing, and while the
>> camera we are using doesn't work quite the same as yours, it does seem
>> like something similar will work.
>>
>> We're using a Panasonic AC-90. Here's a summary of how it behaves:
>>
>> 1. If the memory card is reformatted, .MTS clips restart their numbering
>> from 00000.MTS
>> 2. If all clips on the card are deleted via camera menus, same thing --
>> .MTS clips restart numbering from 00000.MTS
>> 3. If the last recorded clip on the card is NOT deleted, all the other
>> clips can be deleted via camera menus, and .MTS clip numbering will
>> continue to increment from the last recorded clip -- so this is a
>> workable way to avoid duplicate filenames.
>>
>> Thanks,
>> --Michael
>>
>>
>> On 13-01-16 11:36 AM, Wilson Chao wrote:
>>> On my Panasonic GH2 (which shoots AVCHD) I never re-format; I just
>> "delete
>>> all" files. My clip names continue to increment, with no duplicates.
>>> On Jan 16, 2013 8:29 AM, "Michael Brockington" brocking@sfu.ca> wrote:
>>>
>>>> **
>>>>
>>>>
>>>> How are folks dealing with consumer AVCHD cameras that don't allow
>>>> setting custom clip names or prefixes? Every time a memory card is
>>>> formatted, the camera starts capturing another series of identically
>>>> named clips -- "00000.MTS", "00001.MTS" etc.
>>>>
>>>> If I AMA these clips into Avid and transcode, they appears to retain
>>>> timecode, but I think the identical clip names have the potential to
>>>> cause me grief when I try to relink to the original files. (Am I being
>>>> too paranoid?)
>>>>
>>>> Currently I convert such files externally, creating new DNxHD175
>>>> quicktimes, using Adobe Media Encoder CS5.5.1. These effectively become
>>>> my new master footage. I batch rename the output quicktimes to add a
>>>> unique cardname prefix to the filename then AMA the hi-rez quicktimes,
>>>> and transcode them to lower-rez DNx36 for offline editing. There are a
>>>> few downsides to this approach:
>>>> 1. Large DNx175 files clogging up my hard drives
>>>> 2. Two transcodes instead of one is time-consuming
>>>> 2. Adobe Media Encoder doesn't appear to pass AVCHD timecode through
>>>> to its Quicktime outputs in any way that Avid can understand.
>>>> Discarding that info makes me nervous.
>>>>
>>>> Is there a better approach?
>>>>
>>>> Is there a utility that would allow renaming of clips within the AVCHD
>>>> file structure without breaking the structure, for instance?
>>>>
>>>> Is there a better software choice for transcoding that would at least
>>>> preserve timecode from AVCHD files in the transcoded quicktimes?
>>>>
>>>> Thanks for any suggestions,
>>>> --Michael Brockington
>>>>
>>>>
>>> [Non-text portions of this message have been removed]
>>>
>>>
>>>
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>>>
>>>
>>>
>>
>>
>
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