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

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5
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4answers
115 views

Sources to learn more about Audio/Video compression, codecs, algorithms etc.

I was quite surprised when I learned the fact that the MP3 codec is extensively based on the Fourier Transform. I'd like to learn more about these topics in general. When I say more I mean the working ...
4
votes
2answers
2k 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. ...
4
votes
2answers
2k 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 ...
4
votes
1answer
28 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 ...
3
votes
3answers
37k 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 ...
3
votes
3answers
211 views

Adding voiceover without video recompression

I have some mp4 video files with pretty poor video quality. I need to add a voiceover translation. I have seen some video software programs that could do the job but unfortunately most of these ...
3
votes
1answer
505 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 ...
3
votes
2answers
694 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 ...
3
votes
1answer
250 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 ...
2
votes
2answers
243 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
1answer
47 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 ...
2
votes
2answers
58 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 ...
2
votes
1answer
2k 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 ...
2
votes
1answer
386 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, ...
2
votes
2answers
145 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 ...
2
votes
1answer
357 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 ...
2
votes
1answer
52 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 ...
2
votes
3answers
52 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 ...
2
votes
2answers
171 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. ...
2
votes
1answer
109 views

Exam Question - end-to-end delay from video capture to video playout

Hi I'm preparing for my exam tomorrow and I've come across a 17 Mark question which seems trivially easy, so I think I'm missing a key point giving the rest of this exam is fairly difficult. The ...
2
votes
0answers
54 views

Reasons to use 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 ...
1
vote
2answers
345 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 ...
1
vote
2answers
33 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?
1
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1answer
35 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 ...
1
vote
1answer
509 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 ...
1
vote
1answer
6k 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
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1answer
44 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 ...
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2answers
56 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 ...
1
vote
1answer
471 views

How do DVDs avoid the blockyness that plagues dark scenes in most video files?

When a DVD is ripped to a file on a computer the dark scenes typically get compressed to the point of illegibility; huge squares of black are all set to the same value, removing all the detail. This ...
1
vote
1answer
36 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 ...
1
vote
1answer
21 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 ...
1
vote
2answers
24 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 ...
1
vote
1answer
114 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
2answers
181 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 ...
1
vote
2answers
80 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 ...
1
vote
1answer
433 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 ...
1
vote
1answer
430 views

Sony Vegas 10 Video made from smaller quicktime mov videos look crap on youtube

this has been a painful drama for days, trying to get a nice video on youtube for my girlfriend. It looks great on the mpg file sony vegas generates, but after uploading to youtube it look more than ...
1
vote
2answers
46 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 ...
0
votes
2answers
65 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 ...
0
votes
1answer
107 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 ...
0
votes
1answer
39 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 ...
0
votes
1answer
43 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 ...
0
votes
1answer
586 views

Background color of MP4 rendering incorrectly in QuickTime

I am converting a .MOV file into .MP4, .OGV and .WEBM for web use. I have found that the background rendered by QuickTime and Safari is not white although the same MP4 has a white background when ...
0
votes
1answer
95 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 ...
0
votes
0answers
8 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 ...
0
votes
1answer
444 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 ...
-1
votes
2answers
202 views

How to compress video size without losing quality or resolution? [closed]

I have video of 300 MB, and i want to reduce its size to maximum 150-200 MB, so how can i achieve it without losing quality or resolution, is there any free toll to achieving it?