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Originally Posted by
Max Volume
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Depending on the codec used by your camera you will have a different bitrate. The files delivered by cameras can easily reach 50 Mbps, many cameraman use 100 Mbps, this is just to be safe (you can't add bitrate in post). Unless you use proxy (transcode files in a low res version), an HDD has difficulty playing these files. ....
Hmmmm... my intuition is that you're editing in a machine that cannot decode the camera codec in hardware.
More than one YouTuber has attributed poor timeline editing performance to inadequate disk speed, when in fact it's the CPU that cannot keep up with the required thumbnail management and presentation processing. [I alerted one YouTuber to that possibility, and he was gracious, surprised, and possibly a bit angry with himself.]
Now, onto the capitalization bugaboo of 'b' for bits and 'B' for bytes. I made a chart of camera data rates and pre-calculated all the combinations to make it easy to get a sense of the requirements for throughput and disk space for various codecs and resolutions. The link to that post from May 2024 is here:
video cameras to shoot classical/chamber music concerts
A 50Mbit/sec video is likely a high quality HD video, while a 50MByte/sec video is 400Mbit/sec, which is either a 4k ProRes or an All-I H.264. It is quite typical (dare I say, standard) for camera video data rates to be expressed in 'b' bitrate, and also quite typical for various article writers to get it the wrong way around. Which 'b' did you mean?
My Panasonic FZ2500 camera can do 100Mbit/s 4k video, and also can make 200Mbit/s HD video. That translates to 12.5MByte/s and 25MByte/s respectively, neither of which would present a challenge to an HDD. However, the timeline is 'sticky' in my 5950X machine in a complex project, but sails along just fine in the M2 (and now M4) Mac. Hardware decode makes all the difference. The Panasonic GH5S cameras can do 150Mbit/s 4k (my favorite), 400Mbit/s 4k, and 200Mbit/s HD ... among many other options. The Panasonic S1RII looks exciting and offers up to 800Mbit/s video, but I don't (yet?) have a customer set that would justify the investment.
Right now, I'm shoveling a 1.2TB ProRes project off of an SSD onto a 3TB Western Digital HDD that's attached via 5Gbps USB3.0. The intent is to entertain myself with a little experiment to find the edges of HDD capability. ProRes is very CPU-friendly, and therefore is a good combination of high disk throughput demand and freedom from hardware decode requirements.
I am a one-man shop: Normally, all projects are first ingested from the SD cards onto U.2 SSD's (OWC Mercury Thunderbolt3) and backed up onto a TrueNAS RAIDz1 server before editing begins.
Okay, back to work!