All Questions
54
questions
1
vote
0
answers
40
views
Best settings to compress a 4K 60fps ProRes 422HQ video to ~50GB HEVC using FFmpeg? [closed]
I recently upscaled a 1080p 60fps 90-minute video to 4K using Topaz. The output was set to ProRes 422HQ, resulting in a file size of 1.2TB. Naturally, I don’t want to keep the file this large and aim ...
- 11
0
votes
0
answers
122
views
FFmpeg batch compressing mp4s and changing them to gifs
I want to take a folder of mp4s and with ffmpeg compress them and turn them into gifs.
I do this for each file using this code:
ffmpeg -i input.mp4 -c:v libx264 -tune zerolatency -preset ultrafast -...
- 1
0
votes
0
answers
266
views
Best Lossless Video Codec for 8 bpc RGB image sequences?
I render 3D animations, many of which take days or even weeks to render at a time, and I need to keep a lossless archive of the output files. The output format from the render engine is 8 bit per ...
- 1,630
1
vote
0
answers
346
views
How to extract individual macroblock types and their corresponding motion vectors
I need to make a pair for each macroblock from a frame of a video containing its type and motion vector.
I extracted motion vectors by using the python module of mv-extractor.
For macroblock type I ...
- 11
0
votes
0
answers
1k
views
mp4 encoded with ffmpeg not displaying on chrome
I am using the command
ffmpeg -i input.mp4 -c:v libx265 -vtag hvc1 -c:a copy output.mp4
in order to compress my mp4 files. This is the output:
ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg ...
0
votes
1
answer
241
views
Looking to compress just a PGS stream of a video
I have a video stored as an mkv with pgs subtitles. I noticed when I burn the subtitles in with this command hereffmpeg -i "movie.mkv" -filter_complex [0:v][vid];[0:s:1][sub];[vid][sub]...
0
votes
0
answers
206
views
Pixel Art Gif to Webm
I have a large gif file (100+ MB) and I'd like to convert it to webm to reduce the size of the final file to 10-12 MB. I'm using ffmpeg to do this and it converts the file just fine except the ...
- 1
0
votes
0
answers
255
views
Is there a ways extract image from video by frame and join in later with auto remove duplicate pixel area?
Is there a ways to extract image from video. but its not just extract image frame by frame. but the extract image automatically optimize by removing duplicate area pixel by 1 second?
lets 1 second ...
- 101
8
votes
1
answer
12k
views
Using ffmpeg + MPDecimate to get rid of exact duplicate frames (i.e. losslessly)
According to the documentation, mpdecimate will "Drop frames that do not differ greatly from the previous frame in order to reduce frame rate."
I would like to be able to remove only exact ...
- 117
0
votes
0
answers
370
views
Losslessly reducing framerate of a 'video of a video'
I asked this yesterday but it was incorrectly closed as a dupe of question:Reduce video frame rate without dropping useful frames
The difference between that question and this question is - in that ...
- 117
0
votes
1
answer
774
views
Losslessly compressing screenrecording of video chat [duplicate]
I have a screenrecording of a video chat I had and the filesize is massive because the screen recording itself was done at 59.93 fps. However, I think the video chat was something like 15-30 fps. Plus ...
- 117
1
vote
1
answer
1k
views
Downscaling VP9 from 4K to 1080p without re-compression
I have a video file that is a 4K upscale of a 1080p video in VP9 (upscaled to 4K to force Youtube to use higher bitrate for the video).
I want to downscale the 4K video file to 1080p while (...
- 113
0
votes
0
answers
29
views
FFmpeg compression anomalies
I have a 24 fps video. First, I split it into frames:
ffmpeg -i input.mp4 frame%06d.png
Secondly, I joined these frames, and compressed the result in another command:
ffmpeg -r 24 -i frame%06d.png -c:...
- 141
0
votes
1
answer
608
views
FFmpeg reencoding x264 with the same crf multiple times
I have a video, a screen recording: recording00.mp4. I compressed it with FFmpeg:
ffmpeg -i recording00.mp4 -c:v -libx264 -pix_fmt yuv420p -crf 27 -preset veryslow output00.mp4
If I compress output00....
- 141
0
votes
1
answer
42
views
Pine64 fails to compress videos with ffmpeg and H264
I have a Pine64+ (1GB) - A64-DB-Rev B (2016-02-24) with an All Winner Tech chip. I'd like to use to compress videos from 4K to 960. I installed Armbian using these directions, I verified that ffmpeg ...
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