Questions tagged [compression]
The use of identifying patterns in video to reduce the required data rate required to create a video stream.
21
questions with no upvoted or accepted answers
5
votes
1answer
786 views
Largest input image size when encoding a video?
I got a bunch of really large 16 bit videos, approaching 65535×65535 pixels in size. These are essentially high quality timelapse panoramas. I want to convert them to a 7680×4320 movie (8K UHD, 8 bit)....
2
votes
0answers
27 views
Efficiently compressing a looping video with h264
I have a video that is initially 19 frames long and lasts for about 0.5 seconds, it's 432kB.
I've looped it over three minutes and the resulting file is quite large (200MB).
Using FFMPEG is there a ...
2
votes
1answer
263 views
AVI Capture in VirtualDub: MP3 Compression
I would like to capture my old VHS tapes to my HDD. I already was successful installing the xvid codec which gives me an acceptable video compression.
But somehow I am not able to set audio ...
1
vote
0answers
33 views
Before I throw away these massive uncompressed VHS digitizations, what kind of post processing can I do to improve them?
An uncompressed digitized VHS tape is like 60 gigs. Obviously way too big. I can compress it down using H.265 and get basically the same quality. But before I do that, is there any production ...
1
vote
0answers
68 views
ffmpeg video compression : Compress captured video being before saving to file
Is there a way one can compress captured video input before saving to file? I have raspberry pi that I am using to record youtube videos. 1-2 min video takes over a Gb of space. I cant compress the ...
1
vote
1answer
35 views
mp4 to wmv AND file compression
I have a mp4 from a video created in iMovie 10.
The original output is about 1.5 GB.
I uploaded it to youtube to use their compression and re-downloaded.
I now have an mp4 at 236mb.
I need to ...
1
vote
0answers
21 views
Why does people seem transparent in this video
People seem transparent in that video. What does explain that?
I posted on the Physics community, believing that it was related to some optical effect. But I've been told that it may be related to ...
1
vote
0answers
8 views
Why does motion compensation need a decoder?
I know that motion compensation is the process of using the motion estimaton MV information and then compensating it to describe only the differences between reference frame and the motion estimation ...
1
vote
0answers
93 views
Optimizing HTML5 video for best quality
I have a 3 minute video I'd like to embed on a web page. The problem is that despite best efforts, the file size of the video ends up being over 30 mb. I would like the size to be near 10 mb. I have ...
1
vote
0answers
94 views
Best possible quality setting for screen recording (not games) and web presentation
Screen videos have text and simple geometric shapes, which need to
stay sharp, detailed and crispy. The color should also remain
untouched. With screen grabs, I want e.g. IBM blue to show as IBM blue
...
1
vote
0answers
125 views
If I limit the color spectrum of a video, will it compress to a smaller file size?
I know that in exporting images, if I use an indexed color format when I save (such as GIF or PNG with indexed color mode), I can dramatically reduce the file size of the resulting export. My ...
1
vote
0answers
3k views
FFMPEG Tiff images to losseless video (H265) lags, broken output
I have 226 sequenced images (TIFF, 6.2MB each) and i would like loseless save them like video by using H265.
Here is command which I used:
ffmpeg -f image2 -framerate 25 -i IMG_%03d.tif -vcodec ...
1
vote
0answers
90 views
How to drastically reduce size of very simple video?
I've got a series of videos that I'm looking to drastically reduce in size. The video content is very simple: text animating on white background with a voice track on top. The text is mostly just ...
1
vote
1answer
227 views
Export Frames of 10 BPC Video File with ffmpeg
I have several hundred 1080p 59.94fps 10-bit-per-channel (bpc) AVC-Intra Class 100 MXF encoded video files. I would like to extract the frames of this video file and export them to disk in a 16-bit ...
0
votes
1answer
12 views
How to clean up old animated footage?
Recently I ripped a couple of old DVD's to preserve them.
The original rip has a resolution of 720*576 and runs with 5100kb/s on 25fps interlaced.
I tinkered around with Handbreak and (hopefully) ...
0
votes
1answer
29 views
h264 compression keeps same number of frames?
I'm trying to understand how h.264 compression works. So far I have clear what I, P, and B frames are and how are they used. But I'm unsure of is if after this process the number of original input ...
0
votes
1answer
51 views
How can I change/reduce the bitrate of AVI files using Adobe Premiere Pro CC or other tools?
I'm using Eprime and Experiment Builder which requires files in AVI format (AVI-XVid). The files are quite small already (various 2 second clips under 1mb), but are still too large which crash the ...
0
votes
0answers
30 views
Blurring based on colour (to help compression)
I am taking video of rowers on a river and stabilise the video afterwards using ffmpeg. Similar to Video compression- how to prioritize one area over another? I'd like to optimise the compression. The ...
0
votes
1answer
68 views
Recompressing 1080p h264 collection to HEVC - Target Bitrate For Minimal Loss
My understanding is that HEVC (aka h265) can provide roughly the same video quality as h264 in roughly half the space, for 1080p+ footage. I have a large collection that I would like to re-encode to ...
0
votes
1answer
64 views
Compressing a large MP4 file that is on 2.30mins long
I have been sent a video that is only 2.30 mins long. But is a whopping 168mb, unfortunetely this has to be embedded into an app - so I need it as small as possible. I need to get the file size down ...
-1
votes
1answer
12 views
What is a cost effective app to resize, crop & save a MOV file to a reduced size?
I am planning to buy an HD animation which is over 500Meg in size.
I need to resize, crop and reduce the file size to about 10Meg.
I prefer not to deal with Adobe Media Encoder or something like ...
