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4 votes
Accepted

Is MP4 a valid or common container for ProRes?

No, officially, ProRes is not a registered codec for the ISOBMFF family, of which MP4 is a member.
Gyan's user avatar
  • 33.3k
3 votes

How to encode Apple ProRes on Windows or Linux?

This is the command line I have used to encode ProRes 4444. If you do not include -bits_per_mb you will get low res results in Windows 10. Many posts do not mention this little aspect. ffmpeg -y -f ...
vjgalaxy's user avatar
3 votes

Intra-frame H.264 / H.265 compared to DNxHR or Prores as intermediate codecs for editing

ProRes/CineForm/DNxHR caught on because of the platforms which decided to use them. Initially, H.264 didn't have 10-bit implementations and H.265 didn't exist. Those formats are made to hold up to ...
qel's user avatar
  • 131
3 votes
Accepted

Are ffmpeg prores files reliable enough to be used in production/broadcast environment?

I've had no problems producing prores 422 HQ .mov files with ffmpeg on my Windows machine for Mac-encumbered clients, including delivery to TV Networks for broadcast. I have had some problems with ...
stib's user avatar
  • 13.7k
3 votes
Accepted

What are the differences between the three bundled ffmpeg prores encoders?

I found the following explanation on the ffmpeg wiki: Fmpeg comes with 3 different prores encodes: "prores", "prores_ks" (formerly named "prores_kostya") and "prores_aw" (formerly named "...
Patrick Kenny's user avatar
2 votes
Accepted

Bad quality encodes to Prores4444 with alpha from ffmpeg

Looks to be an encoder deficit, probably due to the rapid transition in the alpha from 1 to 0 in the border regions. Outputting to VP9 with alpha produces a clean result as does outputting to prores ...
Gyan's user avatar
  • 33.3k
2 votes

Source ProRes 422 Proxy / Edit / Export to ProRes 422 proxy?

Definitely proRes 422HQ. While you won't gain anything by encoding in a higher quality codec, what you will do is avoid losing more. Proxy codecs are just that: stand-ins for the real content, ...
stib's user avatar
  • 13.7k
2 votes

White balance auto-adjusted half way through recording

A1: Links like these mention that ProRes 'bakes in' the white balance (as opposed to storing it as separate metadata): blackmagicdesign.com forum ; reduser.net forum ; reduser.net forum ; ...
benxyzzy's user avatar
  • 141
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.
Ian Hylands's user avatar
1 vote
Accepted

How to convert ProRes/Quicktime MOV to instagram-friendly with ffmpeg so I can post it on IG

For a web-compatible encode, you will need the video stream to have a yuv420p pixel format. ProRes, as a editing codec, uses different pixel formats. Use ffmpeg -i in.mov -pix_fmt yuv420p -c:v libx264 ...
Gyan's user avatar
  • 33.3k
1 vote
Accepted

ffmpeg problem converting Prores 444 to Prores 422

The input has full chroma sub-sampling and is 12-bit, and, by default, ffmpeg will try to retain as much fidelity as possible when converting the pixel format for the output encoder. However, for the ...
Gyan's user avatar
  • 33.3k
1 vote
Accepted

Transcoding from AVC to ProRes: Are there any negatives that would happen to the footage?

Cons: There will be a small loss of quality due to transcription error, but it's likely to be negligible and not worth worrying about. it will take up way more drive space. Only a problem if you're ...
stib's user avatar
  • 13.7k
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 ...
Matt's user avatar
  • 1,421
1 vote

YouTube Upload Gamma Shift

I managed to get an acceptable result by exporting as Mov/Prores 4444 and a Timeline Colorspace of Rec 709 Gamma 2.2.
Undistraction's user avatar
1 vote
Accepted

ffmpeg prores alpha channel not present when colormatrix and colorspace operations are performed

The colorspace and colormatrix filters don't handle alpha pixel formats, so those get stripped off. The workaround is to extract the alpha and then reattach it. ffmpeg -f image2 -framerate 24.0 -i ...
Gyan's user avatar
  • 33.3k
1 vote
Accepted

ffmpeg colormatrix operations only for 8bpc?

Yes, as it says a couple of lines above, colormatrix supports only 8bpc (8-bit per component) pixel formats. So, when a 16-bit input is filtered with colormatrix, it will be converted to 8-bits. And ...
Gyan's user avatar
  • 33.3k
1 vote

Can't tell if prores4444XQ is any different than prores4444 in ffmpeg 4.1

FFmpeg does have 12 bit pixel formats but the prores_ks encoder is limited to 10 bits. The 4444XQ profile features higher bitrates. Open a ticket at trac.ffmpeg,org, if you like.
Gyan's user avatar
  • 33.3k
1 vote

Convert to ProRes with ffmpeg adds unwanted contrast to footage

Ok, so your input is full-range (pc, bt709) which is unusual, so let's try to correct that. ffmpeg -i ffmpeg.MOV -vf scale=in_range=pc:out_range=tv -c:v prores -c:a copy prores_auto.mov
Gyan's user avatar
  • 33.3k
1 vote

Is footage recorded through external recorder really better?

Unless the DSLR/Mirrorless camera you are using outputs 10-bit 4:2:2, using an external recorder to up-convert the footage to ProRes HQ will not result in a better image quality than what the camera ...
justbroll's user avatar
1 vote

ProRes444 Codec download process to Adobe Media Encoder

In Media Encoder you first need to select your destination format as Quicktime. From there you should be able to find ProRes 4444.
ivkowalenko's user avatar
1 vote
Accepted

Which gives better prores bmpcc or 600d with atomus nimja 2

First, understand that you are probably asking the wrong question. (I'll quickly answer it for you anyway -- the BMPCC's native 10-bit ProRes support is superior.) The real question is probably which ...
daniel's user avatar
  • 121
1 vote

FFMPEG prores_ks 4444 color shift

I believe the problem lies in how FFMPEG does the RGB->YUV conversion by default. This option specifies the use of the bt709 color space for the conversion, instead of the default of bt601. This ...
Bryan Fordney's user avatar

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