Explanation of M100 HD OFFLINE Resolutions?

[Floh Peters]

[Michael C.] “So, will this capture in the HD standard at low res/low data rate?”

Yes, that

[Michael J c]

Thank you, as always, floh!

[Bobby Mosaedi]

so whats the slider for if acquiring the DVCPRO HD codec? i saw no difference with the slider at 100% or at low %. the data rates did not change either. it did however, work with MJPEG, which is my codec of choice, anyways.

but doesnt DVCPRO HD have non-square pixels? when i get info from a quicktime window it says its sqaure, even when i import a ckip from final cut. im curious as to what happens when it “updates media file” is it conforming it really fast?

Bobby Mosaedi
Magic Video, Inc.

“once you go mac, you never go back”

[Floh Peters]

[Bobby MV] “so whats the slider for if acquiring the DVCPRO HD codec? i saw no difference with the slider at 100% or at low %. the data rates did not change either. it did however, work with MJPEG, which is my codec of choice, anyways.”

Not really sure why there is a slider. It should be 100MBits always; I would guess that the slider has no effect for DVCProHD.

[Bobby MV] “but doesnt DVCPRO HD have non-square pixels? when i get info from a quicktime window it says its sqaure, even when i import a ckip from final cut. im curious as to what happens when it “updates media file” is it conforming it really fast?”

No, as far as I know it is “conforming”/expanding it during playback. Like with 720/760 or 720/640 media, which can be mixed in realtime on a timeline the DVCProHD stream gets “decompressed” or unfolded to a full uncompressed HD stream and gets send to the Aja or HDx board as an uncompressed stream. So if you have enough CPU performance it does not matter what the resolution of the incoming signal is, it gets converted to the timeline resolution (1920*1080) in realtime on the CPU and gets send to the board as an uncompressed stream.

[Bobby Mosaedi]

[Floh] “No, as far as I know it is “conforming”/expanding it during playback. Like with 720/760 or 720/640 media, which can be mixed in realtime on a timeline the DVCProHD stream gets “decompressed” or unfolded to a full uncompressed HD stream and gets send to the Aja or HDx board as an uncompressed stream. So if you have enough CPU performance it does not matter what the resolution of the incoming signal is, it gets converted to the timeline resolution (1920*1080) in realtime on the CPU and gets send to the board as an uncompressed stream.”

i am meanning to perform this test whenever i get a chance… so if we have multiple HD codecs in the timeline, say DVCPROHD, MJPEG and uncompressed, what gets sent to after effects if you do a export to after effects function? this really applies to the DVCPROHD… obviously if you digitize through the HDX/AJA hardware m100 will conform the pixel aspet ratio. but if you were to use FCP digged material and quick imported to m100, then what? still rectangular, or conformed when “updating media file”? maybe i just shouldnt worry about it.

media 100’s ability to do all of this codec mixing seamlessly and crash-lessly in the first build and across two different hardware cards just blows me away. now if we can only have timeline nesting and locked window panes like RED4 and after effects i think i’ll be in heaven.

bobby

[Floh Peters]

[Bobby MV] “if we have multiple HD codecs in the timeline, say DVCPROHD, MJPEG and uncompressed, what gets sent to after effects if you do a export to after effects function? this really applies to the DVCPROHD… obviously if you digitize through the HDX/AJA hardware m100 will conform the pixel aspet ratio. but if you were to use FCP digged material and quick imported to m100, then what? still rectangular, or conformed when “updating media file”? maybe i just shouldnt worry about it. “

Simply don