Questions tagged [prores]
An intermediate video codec.
40
questions
0
votes
0answers
43 views
Missing moov atom from ProRes 422 .MOV file
I have a ~200gb ProRes 422 MOV file recorded on a Ninja V that is unplayable.
The Ninja will not recover the file when I try to replay it in-body.
ffmpeg reports that the moov atom is missing.
...
1
vote
0answers
345 views
Intra-frame H.264 / H.265 compared to DNxHR or Prores as intermediate codecs for editing
IMPORTANT: ISSUE SOLVED (STILL A COUPLE OF QUESTIONS, THOUGH), I POSTED SOME INFO BELOW THE ORIGINAL POST AS AN UPDATE IF SOMEONE FINDS THIS USEFUL:
Quick question: what are the advantages of using ...
1
vote
0answers
147 views
ffmpeg ProRes to MP4 Alters Colors Slightly
I cannot for the life of me figure out what is going wrong, but I have a ProRes MOV file with the following specifications:
And I want to convert it to a 4:2:0 MP4 video file. Every time I attempt ...
0
votes
0answers
108 views
ffmpeg prores alpha channel quantization looks pretty bad
Might be related to this other ticket?
I've been doing some prores tests for both color and alpha. Usually this isn't a big deal since my alpha channels are solid with a 1-2pixel transition to black....
0
votes
1answer
155 views
ffmpeg prores alpha channel not present when colormatrix and colorspace operations are performed
So I've figured out how to convert images to prores with no colorspace shifts using either:
-vf colormatrix=bt601:bt709 filter for 8bit material
and
-vf colorspace=all=bt709:range=pc:format=...
1
vote
1answer
53 views
ffmpeg colormatrix operations only for 8bpc?
Unless I'm bad at reading, this page states that colormatrix is only good for 8 bpc.
From Colorspace support in FFmpeg:
... colormatrix produces horrible quality for anything > 8bpc (8-bit per ...
0
votes
1answer
62 views
Can't tell if prores4444XQ is any different than prores4444 in ffmpeg 4.1
Using ffmpeg 4.1 and prores_ks codec. I've encoded various clips into 4444 and 4444XQ. All play and look fine but when I try to use -pix_fmt yuv444p16le for 4444XQ I get the warning:
Incompatible ...
1
vote
0answers
55 views
How to specify 422 8bit ProRes with ffmpeg?
I understand that if I want 444 10 bit, I use pix_fmt yuva444p10le, but what about if I want 8 bit 422? Using yuv422p does not work, and if I leave the pix_fmt field blank ffmpeg always defaults to ...
1
vote
1answer
277 views
Prores ffmpeg questions
I am trying to understand how to use Prores Kostya with FFmpeg, and I have a few questions regarding this:
I have a Panasonic G85 and Gopro Hero 7 black which I used to shoot 4k in. For 4k footage, ...
1
vote
1answer
185 views
what could prevents MPC-HC from opening and playing mov file?
... and the strangest thing is that the very same file plays back just fine on a different (but very much identical) Win 10 system.
The file is a .mov prores video file. Both system have prores ...
0
votes
1answer
110 views
How to slow down ProRes file from 25fps to 16fps without re-encoding?
This works to change the speed, but it also changes the codec to MPEG4 Video (H264).
ffmpeg -y -r 16 -i at25fps.mov -filter:v "setpts=25/16*PTS" at16fps.mov
I need the codec to stay untouched: ...
1
vote
2answers
1k views
Convert to ProRes with ffmpeg adds unwanted contrast to footage
I'm trying to convert H.264 footage from a Panasonic EVA1 camera to Apple ProRes with ffmpeg. However no matter which setting I use, the output file has slightly more contrast than the original input ...
2
votes
1answer
118 views
Is MP4 a valid or common container for ProRes?
Is MP4 a valid or common container for ProRes? I've only seen it in MOVs and MXFs.
0
votes
1answer
46 views
Source ProRes 422 Proxy / Edit / Export to ProRes 422 proxy?
Wondering what exporting best practice is when working on source clips that are captured ProRes 422 Proxy.
I've c-corrected/graded these clips in DaVinci.
When it's time to 'Add to Render Queue', do ...
1
vote
1answer
188 views
White balance auto-adjusted half way through recording
Unbeknownst to me at the time, the camera I was using to record a talking head (so fixed environment and lighting) seems to have drastically altered its colour temperature part-way through recording. ...
0
votes
1answer
30 views
Is footage recorded through external recorder really better?
Most DSLRs offer 8-bit recording, 4:2:0 with 100mb/s 50/mb/s 500mb/s in their own containers.
Why would shooting with an external recorder (let's say ProRes HQ or 422), make the picture look better ...
1
vote
1answer
822 views
Are ffmpeg prores files reliable enough to be used in production/broadcast environment?
Recently I'm transcoding a lot of material that I wish to use in broadcast and production environment where they use all sort of macs and apple software.
I'm not very fan of apple computers and I ...
1
vote
1answer
729 views
YouTube Upload Gamma Shift
I've just finished a music video in Resolve and exported it as Mov/Prores422HQ. It looks correct when played back in Quicktime and in VLC, however when I upload to YouTube, there is a huge gamma shift ...
4
votes
1answer
2k views
What are the differences between the three bundled ffmpeg prores encoders?
I'm using ffmpeg and while looking through the list of codes with ffmpeg -codecs I realized there are actually three different prores encoders:
prores
prores_aw
prores_ks
What are the differences ...
5
votes
1answer
986 views
Bad quality encodes to Prores4444 with alpha from ffmpeg
EDIT: This bug has been fixed. If you're experiencing the problem below, try updating ffmpeg
I need to supply video with alpha as a prores4444 encoded file. I've been trying to use ffmpeg, but for ...
1
vote
2answers
4k views
ProRes444 Codec download process to Adobe Media Encoder
I am using MacOS Sierra and am trying to download the ProRes444 Codec in order to export my Adobe After Effects 4k RED footage in this format (probably using Adobe Media Encoder based on what I have ...
-1
votes
1answer
43 views
Which gives better prores bmpcc or 600d with atomus nimja 2
Which gives better prores bmpcc or 600d with atomus nimja 2. Which kit to buy.
1
vote
1answer
2k views
FFMPEG prores_ks 4444 color shift
I am attempting to encode "ProRes 4444" movies with ffmpeg. Some research led me to the "prores_ks" encoder, which is the only one of ffmpeg's prores encoders that supports "4444".
I used this ...
15
votes
3answers
14k views
H.264 or VP9 for encoding for YouTube?
I make short films which I distribute through YouTube. I know YouTube uses VP9 for streaming, but YouTube still recommends uploading with h.264. It makes more sense to me to upload in as similar a ...
4
votes
1answer
2k views
ffmpeg concatenation introduces video stutter but does not affect audio
I've gone through several different variants of this process and it always causes me problems. I've gotten it working sometimes but it doesn't seem to be consistent.
I have a video camera which ...
2
votes
2answers
706 views
If I shoot in H.264 is it worth it to export the product in ProRes?
I shoot video in H.264. I assume that my footage is forever compressed really small and that exporting to ProRes in FCPX would do nothing but make my file bigger. Is this true? Or am I missing ...
2
votes
0answers
730 views
Can you edit Apple ProRes in iMovie '11?
I have an older Mac Pro, and I am not able to run Final Cut Pro X because of graphics card limitations. However, because I have it installed, it seems like the codecs are present that are required ...
3
votes
1answer
2k views
Troubleshooting XDCAM import into Premirere Pro CC 2014
I am in the middle of editing a TV spot we create bi-weekly and therefore on a tight timeline. I am using Premiere Pro CC (2014) just upadted last week on Win8.1, 4790k, 16GB, OS SSD 256GB, Project ...
2
votes
1answer
3k views
Can't Import Video with Alpha to Premiere
This is really annoying. I've heard a lot about how Apple have removed a lot of different codec uses including the most needed Quicktime RGB+Alpha one in After Effects. I can no longer import videos ...
17
votes
5answers
27k views
How to encode Apple ProRes on Windows or Linux?
Is it also possible to encode video with Apple ProRes on Windows and Linux?
4
votes
1answer
3k views
Converting MLV to Prores
I have some Magic Lantern Raw footage that I want to convert to Prores 444 for use in this workflowenter link description here.
I understand the process, other than the use of LUTs.
In the process, ...
0
votes
1answer
35 views
Re-encoding Archival Movies
I have some old quicktime movies from a project I did in 2005. The client came back recently and wants to do some changes and run off a new version, and since I've got all his media restored at the ...
5
votes
2answers
8k views
Can H264 achieve “equivalence” with ProRes 422?
Has anyone done or seen any tests comparing Apple ProRes 422 with high-bitrate H.264?
We use 422 as a delivery format to go to DCP for theatrical versions of trailers.
The bitrate is around 150mbps.
...
3
votes
1answer
2k views
Premiere Pro PC timeline only plays for a few frames and then no Audio after installing Miraizon DNxHD / ProRes Codec
Since installing Miraizon DNxHD / ProRes Codec I am not able to play my timeline in real-time. It gives me a few frames and then the video freezes and audio keeps playing. I changed from Performance ...
1
vote
1answer
235 views
Batch splitting ProRes into equal-length segments
I routinely have to take ProRes footage and break it up into twenty minute segments of both ProRes and h.264. The computer I'm currently using to do this does has Premiere but not FCP. Any ideas on ...
2
votes
0answers
112 views
What hardware should I get for a conversion farm for MXF => Prores
I currently use a mac pro for importing mxf files into FCP (equivalent to converting to prores, I believe) at about 3x realtime @29.97fps. I want to get a machine to run ffmpeg & do the ...
2
votes
2answers
221 views
Where does the 'extra' data come from when transcoding video?
This is something I've never quite understood, but have always wondered. Forgive my basic knowledge here, but I've tried to research this without a specific answer as to what is going on.
When I ...
0
votes
1answer
218 views
Why is after effects turning my Prores audio into white noise
I have some footage that I converted from red to prores444. I am able to view the converted mov in quicktime and the audio sounds fine. However, I when import it to Efter Effects, the audio previews ...
2
votes
2answers
474 views
Problem exporting a mixture of PAL and ProRes 422 in FCP
I have a FCP sequence made of a mixture of ProRes 422 and PAL clips. As soon as I export it using "QuickTime Movie" (Apple ProRes 422 PAL 48KHz option), the quality of the ProRes clips is superb, but ...
9
votes
2answers
7k views
The ProRes of Premiere Pro?
I'm going to be editing more and more DSLR videos, most notably music videos for my band as we start releasing singles and want to know if there is an intermediate format for both cutting and ...
