5 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 ...
  • 30.7k
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 ...
  • 4,246
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 ...
  • 13.5k
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 ...
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 ...
2 votes

Why does HDMI out on my Canon 5D Mark III work with my TV but not my Lilliput monitor or BlackMagic Design Shuttle 2?

Some DSLRs output HDMI video that does not meet full HDMI specifications. It is not unusual to find combinations of source and destination gear that is incompatible. The HDMI can be viewed on ...
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 ...
  • 456
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
1 vote

Convert ProRes RAW to CinemaDNG or Blackmagic RAW

A Czech film maker, Nikolaj Pognerebko, has created an Mac only app that will convert ProRes RAW to CinemaDNG for use in software such as Davinci Resolve. You can find it on the Apple App store here ...
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 ...
  • 1,084
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 ...
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 ...
  • 19.2k
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.
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, ...
  • 847
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 ...
  • 2,457
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 ...
1 vote

How do I playout rtmp stream to SDI (Decklink Studio 4K) using FFMPEG command?we are using Windows 7 operating system

As the docs say, you need the Blackmagic DeckLink SDK and you need to configure with the appropriate --extra-cflags and --extra-ldflags. On Windows, you need to run the IDL files through widl ...
  • 30.7k
1 vote
Accepted

Why does HDMI out on my Canon 5D Mark III work with my TV but not my Lilliput monitor or BlackMagic Design Shuttle 2?

Which Lilliput monitor do you have and what exactly is the output format of the 5d Mkiii? Not all Lilliput screens can display progressive resolutions. Sometimes cameras provide "fake" interlaced on ...
1 vote
Accepted

What hardware do I need? Multiple audio input devices + BMCC video to Media Express

The page you want to look at is the "Capture and Playback" page of the Blackmagic Products page. Any device on that page that says "four analog audio inputs" is a good bet. Media Express does indeed ...

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