Questions tagged [compression]

The use of identifying patterns in video to reduce the required data rate required to create a video stream.

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2 votes
1 answer
5k views

Loss of quality while adding subtitle via FFmpeg

After solving on problem I cam coming to a next one. After adding subtitles, discussed here, with the command: ffmpeg -i grdedFinal.mov -vf subtitles=portSbs.srt gradedFinalwithSubs.mov the quality ...
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0 votes
0 answers
4k 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 ...
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1 vote
1 answer
1k views

x265: Is it possible to re-compress HEVC video without quality loss?

My situation: Transcoding 1080p bluray videos to HEVC. Audio untouched; My rig is old (pre-2012) and to speed up the process I'm using --preset ultrafast; From x265 documentation, I understand that ...
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6 votes
2 answers
20k 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 ...
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1 vote
1 answer
132 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 ...
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4 votes
1 answer
1k views

How to reduce the size of video to 700 mb

Please help me , I have copied some movies to laptop from dvd disk, but the size of movies are more than 2 gb. But the movies uploaded to torrents are only 700 mb with the same clarity. How to reduce ...
4 votes
1 answer
825 views

How to compress videos for a website?

I want to start a website in which there are some videos. When I searched Google regarding this video website I came to know that for the proper working of the videos we should compress the videos. ...
1 vote
2 answers
3k views

Video file size for web use

What is the best video size for let's say a 5 minute video. I want to host my own videos. So, I want to understand more. What is an acceptable size?
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 ...
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2 votes
1 answer
726 views

Batch compress a folder of videos using handbrake (or other) - Without manually loading each video into the queue

Ive got c.50 videos in QuickTime movie format. These video sit all in one folder on my computer. In the past when Ive had 5 or so files, ive imported them each into Handbrake, then saved them to the ...
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7 votes
1 answer
3k views

Will Compression/Format of Audio Change when Uploaded to YouTube?

If I have a .wav audio file, put it in a video file, say a .wmv, as, if I'm not mistaken, that format basically just uses .wav for its audio, and upload said .wmv file to YouTube, will the compression ...
3 votes
1 answer
822 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 ...
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2 votes
1 answer
641 views

Rendered mp3 file is much larger than original

In Sony Vegas Pro 10 I've placed an .mp3 file (about 3MB file size), then I've cut it slightly at the end to shorten the length. I've tried to encode it with following settings: File - Render As ...
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2 votes
1 answer
258 views

Optimize Filesize export from Premiere CS3

After screen capturing a video and editing it with Premiere CS3*, I'd like some help optimizing the Quicktime filesize. I was wondering if I can get the ratio back to 1:1 at least. I have tried to ...
5 votes
1 answer
214 views

Add noise to video while maintaining compressibility

I'm creating a promotion video that has to be uploaded to YouTube and Vimeo. In post-production (using Final Cut), I've added a noise for aesthetic purposes. This noise looks really bad on YouTube ...
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2 votes
2 answers
66 views

Software that exports into multiple formats and sizes?

Sorry if this is a bit of a vague question. But does anyone know a piece of software that will take one or preferably multiple videos and turn them into multiple formats and quality? So video.mp4 ...
4 votes
1 answer
5k views

How to specify CRF quality settings for different encoding software

Is there a way of specifying a quality setting for h.264 that is not software dependant? I'm trying to help a colleague create a specification for outside contractors when they deliver video to us ...
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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 ...
1 vote
1 answer
434 views

Need to reach a low data rate of about 1.5 - 2 MB/min (200 - 267 kb/s)

I am working on a project involving live streaming. My goal is to reach a data rate of no more than 200 - 267 kb/s when streaming. Is it possible to reach such low rate while keeping an acceptable fps ...
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1 vote
2 answers
536 views

Best format (compression-wise) for Khan Academy Style video

I wanted to do very crisp (maximum resolutions/MB) videos that uses a style similar to Khan Academy (blackboard style with several stroke colors throughout the video, maybe a few still pictures here ...
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1 vote
1 answer
486 views

CHDK on Canon Powershot S100: Is there a Video Bitrate sweet spot?

I'm using a Powershot S100 with CHDK. The default video bitrate of the S100 is around 4 MByte/sec at the highest quality. Using CHDK and the options "Mode=Quality" and "Quality=99", you can get ...
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5 votes
4 answers
21k views

What benefit would I get from using Apple Compressor instead of just exporting from Final Cut Pro X?

I have Final Cut Pro X 10.1.4. I usually always use the "share" option to export my video and select whatever format I want to share with. Usually either "Master File" or "YouTube". I also see the ...
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0 votes
0 answers
10 views

Best free tool for video compression on Mac [duplicate]

I'm editing 'every day' videos with Adobe Premiere like holidays videos. Footages are taken from SLR cameras. I need to share those videos and of course compress it before. Several years ago, i used ...
7 votes
2 answers
1k views

Recording of Lectures: Tips for compressing video with mostly still images

I have several recordings of lectures, some with powerpoint slides, some with writing on a blackboard. They are several GBytes each. However most of the time the video is a still image (besides maybe ...
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3 votes
3 answers
163 views

Looking for a suitable lossy video codec to quickly record video in-game

I'm working on integrating a video recording functionality inside of a game, so that game footage can be automatically encoded to video and shared online from within the game. Currently I've ...
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3 votes
1 answer
167 views

Bulk cutting and compression

I am looking for a piece(s) of software that can cut bulk videos into pieces and compress them. So say I have 10 videos each 20 min, I would like to make a setting 5 min and the output would be 1 ...
3 votes
2 answers
1k views

Optimizing MPEG2 Encoder in Adobe Media Encoder

We're looking at using MPEG2 as an alternative to ProRes 422 for delivery & archiving. There are many options in there which are beyond my knowledge; I would like to understand them and maybe get ...
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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. ...
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9 votes
3 answers
10k views

YouTube Compression: Why?

There's a lot of advice on the internet on encoding settings to apply to your video before uploading to YouTube (https://support.google.com/youtube/answer/1722171?hl=en, ...
7 votes
2 answers
2k views

Converting video with different resolutions slightly affects in file size, why?

I'm converting a video with resolution 960x720p using HandBrake on Mac. When I convert two videos with exactly the same settings but with different resolutions, the file size is almost the same. ...
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4 votes
2 answers
7k views

Awful Audio in Video post-render (Premiere Pro CC)

I'm trying out Adobe Premiere Pro CC 2014 and I have a video with three audio tracks. The quality of each track is as follows (listed as the "Source Audio Format" in Premiere): 48,000 Hz 16-bit Mono ...
1 vote
1 answer
3k views

rendering with the video card in MeGUI

I do not know this is the right forum to ask for help. I need help to speed up rendering with the software MeGUI 2500. First I render to premiere with the help of CUDA. CUDA makes the video card ...
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2 votes
1 answer
1k views

Playing back 1080p and 720p videos (same bitrate) on a 720p display

Suppose a high quality, uncompressed video is re-encoded twice, with almost identical encoding settings at a relatively low bitrate of 4mbps, but at different resolutions, first at 1080p, and then at ...
2 votes
1 answer
12k views

My converted videos look bad... what am I doing wrong?

I am a software developer. I understand the video concepts, but I am no expert. I have a Sony Action Cam AS-15. It records ate 1080/60fps/25Kbitrate. The 60FPS videos just dont; play smooth maxemised ...
1 vote
1 answer
60 views

How to find video frame rate and resolution

I was watching a video produced by local movie maker, on 13" MacBook and it has lines! not sure why. I was thinking maybe the movie has rendered badly. How do I find out what's the resolution and ...
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3 votes
2 answers
708 views

Why does variable bitrate still have a bitrate specified?

My understanding is that the vorbis algorithm uses a variable rate of encoding. So, when encoding videos with audio in vorbis format, why does Handbrake ask me for a bitrate? What does Handbrake do ...
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3 votes
2 answers
805 views

1080p60 recording has very strong compression artifacts, default Neat Video not reducing them much

In attempting to record in the highest quality on a JVC GC-PX100 camcorder, I've been recording 1080p video. Unfortunately, viewing the video upon edit shows very strong compression artifacts, which ...
2 votes
1 answer
119 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 ...
4 votes
1 answer
1k views

Compressor 4.1: Why can't I select the group I made for distributed processing?

I'm currently trying to get distributed processing to work using two different computers on the same network running the same versions of osx, fcpx, and compressor. When I go to choose the group I ...
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4 votes
2 answers
98 views

Best format for audio track with a single/few images

What would be the best (e.g. most compact) format for a "video" that is actually an audio track with a single static image the whole time? (example) And if it was not one static image, but a slow ...
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1 vote
1 answer
77 views

What encoding settings does Revision3 use to get quality high but file size so low?

I am creating my own content. We have recorded uncompressed, and are now at the exporting stage. This video will be downloaded, not streamed via YouTube or Vimeo. So far, we are rendering it at 5Mbps ...
2 votes
2 answers
179 views

Why are Bink compressed videos striped?

If you've ever seen a Bink compressed color video, chances are it was striped and each second stripe was much brighter than the first. They went like this: bright-dim-bright-dim. Was it some kind of ...
7 votes
2 answers
14k views

How to convert an MTS file without loosing quality?

I have shot some videos on a Panasonic v720 camcorder. The videos are huge. I used the internal feature of the camcorder to convert to MP4 and the quality was reduced very much. What is the best ...
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2 votes
2 answers
333 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 ...
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6 votes
1 answer
3k 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 ...
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2 votes
1 answer
816 views

Editing a 640x480 mp4 in premiere CS4

I have a video with 640x480 resolution, which I want to import into premiere and add a MASK over specific areas which should not be visible. I'm wondering what settings I should select when I start ...
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3 votes
1 answer
67 views

Bluray I/O speed

I don't know if this is the correct place to ask this type of question, but here is it. I wanted to find a ball park size of each blu-ray frame size in bytes. This is my calculation which cannot be ...
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10 votes
3 answers
118k views

How to Create a High Quality, Small File Size .mp4 from .mov

Recently, I helped a friend produce a short zombie comedy. He has now asked me to add it to the film's website as a digital download. I'm not having issues with the digital download. My issue is how ...
2 votes
2 answers
45 views

Last bit of RGB changed

I'm going to compress a video but I have one problem. Is a frame with a bit(last bit) of each color(RGB) changed unacceptable or distinguishable from the original one in HD?
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4 votes
1 answer
4k views

Burn a single HD video into a DVD without losing quality

I created a video (slideshow of 14.2MP photos and music) using Windows Live Movie Maker. The video's resolution is 1440x1080 and is as WMV with 840MB. Now what I want is to burn that HD video (no ...
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