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.
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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 ...
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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 ...
- 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 ...
- 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
"...
- 537
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 ...
- 32.6k
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, ...
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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 ; ...
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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
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 ...
- 32.6k
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 ...
- 32.6k
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 ...
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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 ...
- 1,401
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.
- 315
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 ...
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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 ...
- 32.6k
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.
- 32.6k
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
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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 ...
- 11
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.
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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 ...
- 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 ...
1
vote
Accepted
ffmpeg concatenation introduces video stutter but does not affect audio
For some reason I think this is avoided when using ffmpeg's concat PROTOCOL (ffmpeg -i "concat:...") rather than its concat DEMUXER (ffmpeg -f concat -i mylist.txt). Oddly, it's also slightly more ...
- 151
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