mcsmooth
Well-known member
This was a burning question for me as well, but the brochure you posted clears it up. The camera is 1080i only in all bitrates other than 21/24. At 21/24 you have full selection of all framerate and resolution variations. Even though the bitrate is variable, it still has the average rate of 21mbps to hold on to. The fact that it has VBR should only mean good things for the quality (unless they set a stupidly low minimum bitrate). Has there ever been a VBR camera before? Not an easy task to do realtime, so I found that impressive (although it could add woes to editing).I'm guessing your question is not how the image comes off the CCD, but do we still have the 21/24Mbps data rate at 720/24p (or 30p) OR does the data rate drop because there's less data? I wish I had the answer to this question.
I was hoping for 720p at lower bitrates, but I am not going to complain about HD files that are still smaller than DV! I keep reminding myself that with delete-last-clip functionality, we will be fitting more on our media and coming home with a lot less footage to dig through.
This is the key! It is going to be THE 720p camera. The codec has the potential to perform better than higher bitrate intra-frame codecs with low-motion shots. Can't wait to see motion/strobing tests at 720/24p to see how the codec really holds out....AVC-HD, as I understand it, doesn't vary the bitrate based on the frame rate, so you could have 24mbps of 720/60p, or 24mbps of 720/24p -- with obviously 2.5x as much bandwidth applied to each frame.
I believe Jan stated it would not be PCM. I would bet this was chosen to leave more bits for the video (we want the best picture) since top notch audio is typically done separate from the camera anyway. I would guess it will be 2 channel 48k AC-3 at 320 or 384kbps which would sound virtually lossless. Surround would be nice, but I doubt they would bother since the camera housing is based off the 170 with a stereo mic.Also... do we have any idea of the audio format recorded, and how it may vary with the video "mode"/"bitrate"? The AVCHD spec supports both compressed and uncompressed audio... but does the HMC150?
You can't have more light without... more light, unfortunately. There are compromises you can make to get a brighter picture such as reducing the shutter speed at the cost of a blurry picture and lost motion detail. You'll find plenty of related posts in the DVX area.Not to hijack the thread but... How is it possible to have more light in the DVX100a/B without adding lights and using the gain?