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Any way to get photojpeg sequence out of firewire port?
We have a pretty large project here that uses media digitized at photojpeg (about 12hrs of footage, works beautifully with our decklink cards), now an editor needs to go to work with a client and can only bring a laptop and some firewire drives with him, he will have access to TV (not broadcast) monitors and obviously wants his video and audio up on there so the client doesn’t have to squint all the time. My suggestion is to batch all the source media to DV and use a firewire to A/V converter to get it onto the TV, does anyone know of any other workaround, I can get single frames out of a photojpeg sequence to the firewire but no real playback. All help and advice is appreciated (even if it’s just to confirm that there is no other workaround I’d like to hear it).
Thanks for your time,
Glenn Stewart
1k StudiosPS I’ve already searched the posts so please don’t tell me to do so unless you can point to something usefull, the one thread I found seemed to confirm that I’d have to batch to DV. Also I’m not particularly concerned with the quality loss of recompressing to DV as it will be finished back here at 10bit eventually.
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8 Replies
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Sounds like you’ve answered your own question… So I have to ask…. why did you digitize in photojpeg?
Well, you can set your sequence to DV and render it out, then you can write it to DV tape. But the best suggestion is to re-batch everything to DV in the first place. What format is the original footage in? The reason I ask is if its DV footage and you finish in 10-bit, then all your doing is wasting drive space since 10-bit DV doesn’t look any better than straight DV footage. If you are going to finish DV to anything uncompressed, it might as well be 8-bit.
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Wayne Carey
Schazam Productions -
The source is dBeta (telecine from film/HD master) and to save drive space we digitized in photojpeg, it looks better than DV with a smaller file size and the decklink cards will pump it to SDI for monitoring without the need for a disk array. I’d rather recompress in software than tie up (and wear out) our decks redigitizing.
Thanks for the advice, I was just hoping someone had a trick to make the photojpeg work.
Glenn Stewart
1k Studios -
Glenn
Don’t know if your firewire drives will support the bitrate of the photo jpeg (which the EVS systems we use record), but if they do, there MAY be another solution, although I havn’t tried it – and it may not look as good as your DV workaround…
If you are using the video output on the laptop to feed composite video to a monitor, why not set the video output in FCP to go to “DIGITAL CINEMA DESKTOP 2” – ot whatever it calls the video port, and your canvas playback should magically appear there!
You can find this option under A/V devices in the Audio/Video Settings option, and select the video output drop-down. Or access it from the bottom of the view tab.
Just a theory – never tried it with mjpeg, and don’t know how smooth it will be. I suspect not as smooth or processor pleasing as the DV option, but saves a lot of messy on/off-lining.
Love to know if you try this, and how you get on.
Ben
Editec Broadcast Editing Ltd
EVS and FCP specialists
Current Mac systems All Dual 2.7Ghz with Kona 2 and Digital Voodoo cards, 6Gb Ram, Sapphire, SCSI320 Medea and Huge Arrays.FCP projects include Sky TV coverage of the Ryder Cup and US Open Golf – Live OB specialists. Edit/slomo vehicle.
http://www.editec.co.uk -
Just remembered – this video out is called ‘desktop 2’ in FCP.
Sorry if this solution amounts to stating the obvious – and not exactly what you asked, as it’s not via firewire. I am 99.9% sure that firewire ONLY supports DV streams. Don’t know if this option is even open to you…
Ben
Editec Broadcast Editing Ltd
EVS and FCP specialists
Current Mac systems All Dual 2.7Ghz with Kona 2 and Digital Voodoo cards, 6Gb Ram, Sapphire, SCSI320 Medea and Huge Arrays.FCP projects include Sky TV coverage of the Ryder Cup and US Open Golf – Live OB specialists. Edit/slomo vehicle.
http://www.editec.co.uk -
Use media manager to recompress your footage as DV onto the firewire drive and your done.
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AJA IO or IO LA could probably handle photojpeg.
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How about plugging the output of the Decklink card into a “DV Media Converter”? I guess you would need a DV Converter that had an SDI input. Looks like it would save a lot of time rendering inside of FCP and you wouldn’t have to change your workflow.
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Thanks for all the advice, we are just going to use the second desktop output but it looks like we will need to recompress to DV anyway, for some reason when we try to do it with the photojpeg sequence the colours get messed up (looks like incorrect YUV vs RGB colour space, you know those lovely psychedelic pinks and greens!!) tried all the settings with no luck, the DV sequence works fine though, plus we have the backup option of the firewire output if necessary. I did a test and I’m getting faster than realtime recompression to DV on a dual 2.7 GHz machine using the media manager so it’s not a big deal. It does suck that the data rate for DV is greater than photojpeg, I love that codec, if you haven’t tried it check it out, 75% quality seems to be the sweet spot, of course it’s best with a Decklink card for output.
Thanks again everyone for some reason I’m not getting any emails when posts are added despite having checked the preference, otherwise I would have got back sooner.
Glenn Stewart
1k studios
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