PhotoJPEG vs Blackmagic 8-Bit Uncompressed

[Graeme Nattress]

I’d not use PhotoJPEG100% as an offline codec as it’s 4:4:4 RGB. Use PhotoJPEG75% instead as it’s Y’CbCr at 4:2:2. Visually, it’s excellent.

Graeme

– http://www.nattress.com – Film Effects for FCP

[D]

Hey Graeme,

Love your FCP plugins by the way! I am currently working in 8-bit 4:2:2 uncompressed all the time. Judging from some of the Tests I’ve seen (ie. One River Media) Photo JPEG seems to stack up very well. But I want to know how the RT etc. is in comparison to 8-bit uncompressed. Using it at 100% (4:4:4) shouldn’t be an issue with an Xserve RAID running at 280mb/sec read 180mb/sec write. or will using the different color space introduce luminance shift?

Cheers,

-D

[D]

Hey Graeme,

Love your FCP plugins by the way! I am currently working in 8-bit 4:2:2 uncompressed all the time. Judging from some of the Tests I’ve seen (ie. One River Media) Photo JPEG seems to stack up very well. But I want to know how the RT etc. is in comparison to 8-bit uncompressed. Using it at 100% (4:4:4) shouldn’t be an issue with an Xserve RAID running at 280mb/sec read 180mb/sec write. or will using the different color space introduce luminance shift?

Cheers,

-D

[D]

Hey Graeme,

Love your FCP plugins by the way! I am currently working in 8-bit 4:2:2 uncompressed all the time. Judging from some of the Tests I’ve seen (ie. One River Media) Photo JPEG seems to stack up very well. But I want to know how the RT etc. is in comparison to 8-bit uncompressed. Using it at 100% (4:4:4) shouldn’t be an issue with an Xserve RAID running at 280mb/sec read 180mb/sec write. or will using the different color space introduce luminance shift?

Cheers,

-D

[D]

Hey Graeme,

Love your FCP plugins by the way! I am currently working in 8-bit 4:2:2 uncompressed all the time. Judging from some of the Tests I’ve seen (ie. One River Media) Photo JPEG seems to stack up very well. But I want to know how the RT etc. is in comparison to 8-bit uncompressed. Using it at 100% (4:4:4) shouldn’t be an issue with an Xserve RAID running at 280mb/sec read 180mb/sec write. or will using the different color space introduce luminance shift?

Cheers,

-D

[D]

Hey Graeme,

Love your FCP plugins by the way! I am currently working in 8-bit 4:2:2 uncompressed all the time. Judging from some of the Tests I’ve seen (ie. One River Media) Photo JPEG seems to stack up very well. But I want to know how the RT etc. is in comparison to 8-bit uncompressed. Using it at 100% (4:4:4) shouldn’t be an issue with an Xserve RAID running at 280mb/sec read 180mb/sec write. or will using the different color space introduce luminance shift?

Cheers,

-D

[D]

Hey Graeme,

Love your FCP plugins by the way! I am currently working in 8-bit 4:2:2 uncompressed all the time. Judging from some of the Tests I’ve seen (ie. One River Media) Photo JPEG seems to stack up very well. But I want to know how the RT etc. is in comparison to 8-bit uncompressed. Using it at 100% (4:4:4) shouldn’t be an issue with an Xserve RAID running at 280mb/sec read 180mb/sec write. or will using the different color space introduce luminance shift?

Cheers,

-D

[Bryce Whiteside]

Nah, nah, nah, nah, nah, nahhaaa…

Bryce

Don’t worry Mr. B. I have a cunning plan…

PowerBook 1.67 Ghz ATI 9700 128 MB 2 GB
Final Cut Pro HD
DVD Studio Pro 3
Motion

[Graeme Nattress]

Well, because your video is 4:2:2, going to 4:4:4 is not going to add any quality, and the actual amount of compression is the same, other than that difference, between 75% and 100%, so there’s no real advantage to the 100% version, and as you say, could introduce luma issues.

However, Apple have not RT enabled PhotoJPEG codec beyon 35% and small frame sizes for it’s Offlilne RT modes. This is totally evil on the part of Apple. You’ll therefore get more RT on your uncompressed 8bit video.

Thanks!

Graeme

– http://www.nattress.com – Film Effects for FCP

[D]

Hey Graeme,

That’s what I was affraid of… The problem I am having now, which is why I was considering using another codec, is that using Blackmagic 8-bit uncompressed leads to larger project files (over 12megs). FCP 4.5 has a really bad bug with large project files which causes stutter/slow down in the timeline when trimming/moving clips. If I start a new project with just a few 8-bit clips in it things move like butter and RT is actually quite good.

I can’t believe Apple let a bug like that go unfixed in 4.5 especially with the push for “professional” moniker with guys like Walter Murch ‘coming out’ in favor of FCP. The move to FCP 5 scares me after reading some of the FCP 5 horror stories on The Cow…

Cheers,

-D