6
votes
Accepted
replace black frames with previous frames
It's possible to have the black frames removed and earlier frames duplicated.
ffmpeg -i in.mp4 -vf blackframe=0,metadata=select:key=lavfi.blackframe.pblack:value=50:function=less -vsync cfr -c:a copy ...
- 33.8k
3
votes
Accepted
Blackmagic setup: How do I record all cameras in a multicam broadcast?
You can use an SDI Distribution Amplifier ("DA") (one SDI input, and two or more SDI outputs) for each camera so you can "duplicate" the camera video to send to both the production switcher and to ...
- 686
3
votes
Prime or Zoom for Video (Micro Four Thirds)
I have that camera. Here are a few things to consider:
The camera doesn't have any in-body stabilization, so the footage can be very shaky unless you're prepared. In my situation, I knew I wanted ...
- 4,544
3
votes
Accepted
Prime or Zoom for Video (Micro Four Thirds)
For most people, the first workhorse lens will be a zoom, because of the versatility.
Sharpness in lenses isn't a huge factor for video; at HD resolution and below, lenses that photographers turn ...
- 13.8k
3
votes
Accepted
Blackmagic RAW get Thumbnail in Windows Explorer
I've created a thumbnail provider available from here https://github.com/tom-gangemi/braw-thumbnail-provider/releases/tag/v1.0.
All you need to do is extract to your desired install location and run ...
- 146
2
votes
Changing duration of multiple still frames at once (stopmotion animation)
You can use Edit > Delete Gaps
This will remove all gaps on all tracks. To exclude a particular track, you can lock the track before you Delete Gaps.
You can also change the default Image/Still ...
- 496
2
votes
Accepted
What causes a loud tone/noise in Blackmagic ATEM talkback?
tl;dr
Make sure none of the SDI outputs of the ATEM are routed back to its inputs.
Talkback feedback loop
The ATEM uses SDI channel 15 and 16 for talkback. If you route one of your SDI outputs to the ...
- 196
2
votes
Convert ProRes RAW to CinemaDNG or Blackmagic RAW
A Czech film maker, Nikolaj Pognerebko, has created a paid app (macOS version, Windows version) that will convert ProRes RAW to CinemaDNG for use in software such as Davinci Resolve.
- 21
1
vote
Convert ProRes RAW to CinemaDNG or Blackmagic RAW
I want to advice against converting to any RAW format, I don't even know if that's possible at all. A RAW format is usually driven by the needs of the camera hardware and fits the purpose of ...
- 1,421
1
vote
Accepted
What does a flashing button mean on the Blackmagic ATEM 4 M/E front panel?
tl;dr
It indicates that ME 3 PGM is selected since there is no buttons for M/E 3 and 4.
Blackmagic ATEM Front Panel Tutorial
The switcher's front panel doesn't have a button for all routable inputs/...
- 196
1
vote
Prime or Zoom for Video (Micro Four Thirds)
For videography you do not necessarily look for "a good" lens for pixel peeping, you want a good autofocus system and a wide aperture for a "cinematic look".
This depends on what type of videography ...
- 1,212
1
vote
Accepted
DeckLink recording using ffmpeg on Ubuntu 18.04 doesn't start
I managed to fix this. It turns out the card was active, but had frozen for some reason. rebooting the machine, something I should have done in the beginning sorted out the problem. Thinks are still ...
- 41
1
vote
Accepted
Fujifilm X-T3 or BMPCC4k for musicvideos and feature film
As long as you can do the job right, there is no contest here. BMPCC4k all the way. The X-T3 is a nice mid-range photo camera, but it's a still camera first and a video camera second with all the ...
- 19.4k
1
vote
Accepted
Blackmagic UltraStudio 4k Extreme recording through SFP
According to the B&H details, the SFP cages are for 12G-SDI over fiber. They can only be used for baseband video I/O, not for an interface to a computer or network.
- 2,404
1
vote
Calculate depth-of-field on BMPC 4K using a 50mm/1.8
Going to f/1.8 will brighten up everything, the Screen and the Presenter, and reduce your DOF. With a less expensive Lens your going to be stopping down to get a sharper image; wasting time and money, ...
- 869
1
vote
Calculate depth-of-field on BMPC 4K using a 50mm/1.8
You will need an app or chart for the calculation. There are apps on both iOS and Android for this. Just search depth of field calculator.
With a 50mm lens shooting at f/1.8 you're depth of field ...
- 2,487
1
vote
Accepted
ffmpeg and decklink- how to specify audio_input for hdmi video?
Using embedded (or omitting -audio_input) is the intended way to get the audio of HDMI or SDI signals.
Please make sure that there is a 2ch-stereo audio signal on HDMI. If it is 5.1 or 7.1 you might ...
- 26
Only top scored, non community-wiki answers of a minimum length are eligible