When does compression happen when shooting/recording

Former user wrote on 4/12/2020, 2:30 PM

I recently found a cheap price on an Intensity Pro video card that has the HDMI and analog inputs. From what I read, they say that if you capture from your camera's HDMI rather than record to the memory card, that you are getting uncompressed video. Is this true, does the compression happen during the recording process? Can HDMI pass uncompressed video? I have the card working with Vegas V12 (I know it is old, but it works well for me). I can even record with it, but only in SD format. I didn't think it would capture from the card at all. Playback is whatever resolution I send it up to 1080p. Anyway, I was curious to see what you all know about cameras and compression

Comments

Musicvid wrote on 4/12/2020, 2:41 PM

100% depends on your camera and card within port specs of course: i.e, what will the camera deliver and what will the card accept and/or save?

HDMI is agnostic to compression, or the lack of it (see below for HDR 10 limits). It's just a pipe.

 

j-v wrote on 4/12/2020, 2:45 PM

Most camera's nowadays capture the amount of frames that is set and can use mostly more than one codec to save it. You can set your type of codec and number of save frames in the camera settings. The max. datarate HDMI can transfer is  48,0 Gb/s . So if the HDMI is connected with your computer, it are the possibilities of your computer what it can record on a disc and also depending how fast that disc is to record data

Ah @Musicvid was in front of me because I have to translate and how later on the evening with some drinks.............😊

Last changed by j-v on 4/12/2020, 2:48 PM, changed a total of 1 times.

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Musicvid wrote on 4/12/2020, 2:54 PM