All Questions
Tagged with compression codec
23 questions
0
votes
1
answer
242
views
Suitable alternative to Quicktime RLE for alpha-containing non-cartoon videos?
I'm producing a product that involves a composition of several videos, over alpha layers, and there are surprisingly few options aside from image lists. Quicktime's RLE (Run-Length Encoding) codec ...
- 170
5
votes
0
answers
202
views
Optimized Parameters of `FFMPEG` for Screen Recording
Windows has a great codec for screen recording called Windows Media Video Screen.
It generates artifacts free videos which are highly compressed (small size).
I was wondering, what would be the ...
- 151
0
votes
1
answer
196
views
ffmpeg and ffprobe existing library or an add-on, pros/cons of building one myself
I work with video creation, animation, or fix video elements for several broadcasters in my area. My pipeline includes ffmpeg suite of libraries, and I have written one plugin specifically for ffmpeg ...
- 101
1
vote
1
answer
6k
views
What is the difference between .mts and .mp4 video files, and which is better to edit?
I know that .mts video files use MPEG-4 video compression. But why then don't they just have the .mp4 file name extension?
Since they don't, this means they are not digitally nor conceptually ...
- 223
0
votes
0
answers
767
views
Streamable Container for gstreamer with ngnix / RTSP on jetson nano
Im working on this project :
https://www.hackster.io/jonmendenhall/jetson-nano-search-and-rescue-ai-uav-9ca547
At some point I will need to mount my camera (waveshare ; IMX219-77IR) on top of the ...
- 103
1
vote
1
answer
27
views
GIF/SVG kind of compression for Video
I am looking for a solution to compress screen recording. Imagine a coding tutorial involving mostly text and windows and almost no graphics other than icons and occasional view of the wallpaper.
...
- 111
1
vote
1
answer
52
views
Decrease video size post-editing
I am using a video editing software to edit my videos for YouTube. The scenario is as below:
Input file size: 80mb.
Input type: webm.
My expectation after editing :
Video size: around 100mb.
(Any ...
- 113
0
votes
2
answers
960
views
Merge multiple video files using ffmpeg by adding multiple compress options
I would like to merge multiple video files, performing in the same time complex compressing options.
How can I do that? The following ffmpeg command resulting this error:
Filtergraph 'scale=1280:...
- 173
0
votes
1
answer
38
views
Shooting short clips vs. cutting long clips
Say I want to create several short clips with the original encoding of a certain camera. Do I have to shoot the short clips directly or can I shoot a long clip and then cut it up using ffmpeg with the ...
- 133
1
vote
3
answers
667
views
Some H.264 videos that I have seem to have excessive bitrate, is there a way to determine/find their recommended bitrate?
So I have some videos that are Full HD, h264 but they have over 30M bitrate at 30 FPS, they are SDR and their quality is not very impressive so it seems excessive and unnatural for such unimpressive ...
- 35
0
votes
1
answer
649
views
What happens when you use a specific CRF value on a already encoded x264 video?
If there is a h.264 video, and I use -crf 17 I sometimes I get a lower bitrate, but the weird thing is - most of the time get a higher ones.
I am trying to get this setting because I think some ...
- 35
-2
votes
1
answer
2k
views
Lossless and lossy compression techniques
Are MPEG and H.264 Lossless??
I need a brief explanation about lossy and lossles... And which compression technique is generally using in CCTV Surveillance applications of video??
1
vote
1
answer
331
views
Does increasing the framerate while not changing the content affects compression quality?
This question has no practical importance for a regular video production pipeline, but nonetheless it's something I find fascinating because it would imply video codecs use temporal sub-sampling ...
- 113
3
votes
1
answer
445
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 ...
- 173
-3
votes
1
answer
171
views
Please Explain the Codecs in my Example [closed]
Can someone explain what's happening in my project? Please use as much detail as possible, I just want to learn, thanks.
I have an Apache web server. It contains many videos (.mp4 .mkv which are ?...
- 3
6
votes
2
answers
21k
views
Reduce render file size in After Effects
I am making a simple travel map, like the one in the Indiana Jones movies. I followed this tutorial:
(German)
When I want to save it as a video (render it), the ...
- 61
9
votes
2
answers
1k
views
Video codec for simple animation?
I am generating an animation in Matlab, composed of simple diagrams. The images are characterized by fine structures, strong contrasts and mostly discrete colors, e.g. there are few-pixels wide black ...
- 231
3
votes
1
answer
996
views
Reasons for using DNxHD instead of ProRes?
I often use ProRes or DNxHD codec without any thoughts, because the quality is very similar, even though the code and the compression algorithm certainly is very different.
I would like to know in ...
- 2,324
2
votes
1
answer
3k
views
Poor and low quality on import/render Adobe Premiere
I record a video step-by-step using Microsoft Expression Encoder 4, encode the file with 'Best Quality' preset, the result info in file its:
ID : 2
Format ...
- 121
6
votes
2
answers
11k
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.
...
- 304
2
votes
1
answer
126
views
What Codec Shows Absolute Black?
I need a codec that outputs an absolute black.
Encoded some samples with .AVI no compression and the black background of my video is very dark. Contrary in other codecs like Apple ProRes or H264/MPEG4 ...
- 141
2
votes
2
answers
428
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 ...
- 151
6
votes
2
answers
4k
views
ALL-I vs IPB. Which one to use
I'm fairly new do filmmaking. I've been trying to figure out which is best, but people seem to have very different opinions and everyone has his own arguments. My guess is that ALL-I should be better ...
- 319