5
votes
Accepted
ffmpeg vf scale shifts colors to washed out
The video's color transfer characteristics (trc) and color primaries flags are not being set on the output video, which is causing the video player to use incorrect values for playback, resulting in ...
- 311
5
votes
Accepted
ffmpeg/x265: fixed-GOP, IDR only keyframes, repeating headers
Minimal command line, for a GOP size of 2 seconds:
ffmpeg -i input -force_key_frames expr:gte(t,n_forced*2) -c:v libx265 -x265-params open-gop=0:scenecut=0:repeat-headers=1 output.hevc
Verification:
...
- 32.3k
4
votes
Accepted
What's special about Apple-device generated HEVC files that (apparently) x265 can't produce?
Well. Turns out that if you read this guide for HLS streams, it gives a bunch of details on how the actual video formats should be set up. In particular, for HEVC, it says:
1.10. You SHOULD use ...
- 71
3
votes
Does HDR content have anything to do with codecs?
You can do HDR with almost any modern codec. All it means in practice is that the boundary between the highest and lowest intensities in the image goes beyond what a non-HDR image could portray; if ...
- 160
2
votes
FFMPEG - The result of converting video to hevc format lost audio (video only)
There is so much wrong with your command that it would take too long to list every issue. It will be simplest to just provide a corrected command:
ffmpeg -i input -c:v libx265 -crf 28 -c:a aac -b:a ...
- 9,814
2
votes
How does ffprobe identifies I frame and IDR, when it sets key_frame=1
It sounds like you're analyzing a HEVC bitstream. HEVC has multiple types of Random Access Pictures, only one of which clears the buffer. But ffmpeg flags all of them as keyframes.
You have to use ...
- 32.3k
1
vote
What does the tag "-tag:v hvc1" means?
The FFMpeg document gave the idea of using the tag option with a FourCC code, and H.265/HEVC Video Encoding Guide gave the idea of Final Cut and Apple stuff compatibility. The hvc1 is defined to ...
- 744
1
vote
Accepted
h264/hevc: non-integer frame rates
It only looks like 24fps at first glance. From the Wikipedia entry on SMTPE timecode, the section on drop-frame:
“In order to make an hour of timecode match an hour on the clock, drop-frame timecode ...
- 4,414
1
vote
Accepted
HEVC vs H264 video file size
You've specified the encoding bit rate to be 5000*1000 kbs. So the constraint here is the file size, not the quality of the video (i.e., all of your videos will be approximately 5 kbs * duration in ...
- 161
1
vote
Adobe Premiere Pro no H265 export option?
It should be there, "HEVC (H.265)", selectable under format. If it's not there the codec may not be installed on your system. Adobe describes how to check and install it here: https://helpx....
- 1,401
1
vote
Recompressing 1080p h264 collection to HEVC - Target Bitrate For Minimal Loss
I've transcoded some of my AVC (h.264) 1080p movies to HEVC (h.265) with 2 pass encoding (using my GPU) and target bitrate set to 50% of original. The other streams (like audio and subtitles) were ...
- 11
1
vote
Accepted
How to transcode HEVC footage on a mac if you don't have CC2018 yet
Go with handbrake. It's a free GUI program for performing transcodes. It is even used to benchmark processors and graphics cards.
- 106
1
vote
How to transcode HEVC footage on a mac if you don't have CC2018 yet
Install Homebrew.
Open Terminal.
Install FFMPEG with extra features by entering the following on a single line:
brew install ffmpeg --with-fdk-aac --with-ffplay --with-freetype --with-libass --with-...
- 7,525
1
vote
Accepted
Loseless conversion from IphoneX HEVC for PC - PPro
Conversion always will involve some loss, only copy (-c) is lossless.
There are some suggestions for "lossless" encoding in this Q&A, but I can't test them on my phone. There are UpVoted and ...
- 847
Only top scored, non community-wiki answers of a minimum length are eligible