The process and techniques used when storing moving images, sound, metadata and other streams as a digital file.

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8
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4answers
16k views

How to losslessly encode a jpg image sequence to a video in ffmpeg?

I have a large set of jpgs that I want to convert to a video losslessly (or, at the very least, very close to losslessly as long as the encoding time isn't much higher than otherwise). Naively, I ...
5
votes
1answer
185 views

Creating menu for a video file (not for DVD)

I need to create a menu for a video, which will be written onto a disk not in a DVD format, but as a single file (f.e. mp4). The problem is that programs such as Adobe Encore are not able (as far as ...
5
votes
1answer
571 views

How do I speedup encoding of a video that has just 1 static frame with ffmpeg and lib264 library?

I'm making mp4 (libx264 + aac) videos that have just one static image throughout the whole video. It's basically a narrated text with a nice background. The question I've is how could I speed up ...
4
votes
4answers
428 views

How to encode apple ProRes on windows or linux?

Is it also possible to encode video with Apple ProRes on windows and linux?
4
votes
3answers
103 views

Is it possible to encode video using the same codec and container but different parameters for different scenes?

I know that it's very hard to find out best encoding parameters for a whole video file. Wouldn't it be easier to just go through the video and find out the best parameters for different parts (or ...
4
votes
3answers
163 views

Recommended Encoding for VHS to Digital to be Followed by Post Processing

I have VHS tapes that I want to digitize. I started this using something like Pinnacle's Dazzle. I notice that the only encoding options were for compressed video, which could lead to quality ...
3
votes
4answers
580 views

Minimal working frame rate for H264 codec

When making a video from single image files whereas each image file should be visible for about one second, it does make sense to encode a video with an extremely low frame rate such as 1 frame per ...
3
votes
2answers
338 views

Add image under the video with ffmepg

I want to extend basic usage of watermark and put it under the video. That means. I have input video 720x480 and image 720x20. On output i want to have video 720x500 where video aspect is preserved ...
3
votes
3answers
6k views

Why is Adobe Media Encoder so slow?

I have a 2.5 hour corporate event that I edited in Premiere Pro. There are AE clips, sound, imported video, the works. When I run it out to AME, the source resolution is 1440x1080 and I am ...
3
votes
3answers
94 views

how to add video title without re-encoding the video

How can I add a video title, in the start of a video, without re-encoding the actual video and losing the quality? is it possible in iMovie or Adobe Premiere Pro ? or even any Windows software? is it ...
3
votes
2answers
47 views

Upscaling or downscaling videos

I was wondering, is upscaling from the videoplayer worse then upscaling the video during encode? For example, consider the original source of a video is 640 x 480. Which of the following will produce ...
3
votes
1answer
193 views

Video fails to play in QT browser plugin. Encoding problem?

I have a video that fails to play in the QuickTime plugin in Internet Explorer on Windows 7, but it plays fine in the standalone QuickTime player. I suspect that this may be an encoding problem, and I ...
2
votes
2answers
37 views

Is there an existing video format that records per-frame metadata?

I wish to stream a video with dynamic metadata. I know I could just steam the video and metadata separately, but ideally I'd like them to be bound permanently. Is there an existing protocol / ...
2
votes
3answers
174 views

Video Encoding - Wasting Space

I am facing a common issue that I cannot find a term to describe: I have a few low quality VHS rips that were encoded with a certain Apple ProRes codec (irrelevant in the context of this particular ...
2
votes
3answers
385 views

h264 settings for large flat areas of slowly changing colour

I'm doing an animation for a projection mapping that simulates the sun casting shadows on a structure as it moves through the sky. Basically it's just big flat areas of colour that change over about ...
2
votes
1answer
3k views

How to force Adobe Media Encoder to use 100% CPU and memory?

On my machine, Adobe Media Encoder is very slow. It takes 12 hours to render 4 minutes of 1080p video for YouTube (the video is based on Adobe After Effects project with an original MOV file and four ...
2
votes
1answer
497 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
165 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
464 views

Premiere Pro CS6 preview problem: other application shows through

Sorry if this is the wrong place to ask this question, but, I'm having a issue with Premiere Pro CS6 from Creative Cloud. Whenever I put footage in the timeline this happens: . The file's encoding ...
2
votes
2answers
5k views

Adobe After Effects MP4 Export Issue

I'm trying to export a composition from Adobe After Effects. My Comp is 1280x720, and ideally I'd export with an mp4 container, and h264 video codec. Problem is, After Effects is giving me a PAR ...
2
votes
1answer
470 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
1k views

Avidemux “too short” error

I'm trying to encode clips with x264 in avidemux. Problems come when I set video length to 10 seconds while I resample output to 1 fps (without changing duration): avidemux report "Too short" error ...
2
votes
1answer
68 views

What is the underlying difference between motion compensation and motion estimation?

I know that motion estimation has to do with calculating motion vectors, but where does motion compensation come into play. Can't we just do it with motion vectors, since, we are still calculating the ...
2
votes
1answer
92 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
votes
1answer
36 views

Multiple video encoding loss

It's easier to explain my question using an example. Imagine you filmed a few short videos and want to combine them together in a sequence (probably with transitions and etc.). However, for some of ...
2
votes
3answers
68 views

Is reencoding a YUV 4:2:0 video in a 4:2:0 colour space lossless?

I have a video that is stored in the YUV 4:2:0 colour space. Assuming I used a lossless video codec but set the output colour space to YUV 4:2:0, would this still be a lossless encode or would I have ...
2
votes
1answer
53 views

Why doesn't the duration of a Premiere Pro encoding scale linearly?

I have a long sequence (canon dslr and titles) (1hour) and as a test export 1 minute at h264 Blu-ray pre-defined setting (pal 1920x1080, upper field, low quality). This takes approx 1 minute to ...
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
0answers
24 views

Adobe Encoder fps and duration doesn't match

I have After Effects project file 25 fps, 29 seconds duration long. After exporting i get 725 png files - looks normal so far. But then i merge it to mp4 using Adobe Encoder, I get total 24 seconds ...
2
votes
0answers
5k views

2GB vs 4GB Graphics card Memory for playback and encoding of Videos in Adobe Premiere CC [duplicate]

While looking into buying a new graphics card for the editing, live playback and encoding of videos in the new 64bit Premiere Pro CC, I was wondering about: 1) how and when a graphics card's ...
1
vote
3answers
479 views

For a given bitrate, what video resolution is perceived as the highest quality?

I'd like to achieve certain approximate bitrate for video encoding. If I use higher resolution like 720p, I'll get more fine-grained image, but more encoding artifacts. If I use smaller resolution ...
1
vote
4answers
544 views

What is the most compatible compression/Codec to in Handbrake use for video that will be played in Chrome and Safari browsers?

I am going to re-sample a bunch of videos to be played through web browsers. (Current video is large, 3 MB for a 4s clip. Hoping to compress by 90%). Use: These videos will be played in a web-based ...
1
vote
3answers
53 views

What options are there for hardware encoding/decoding?

For the last 24 hours I've been waiting for some files from a Sony camera (about 60Gb) to convert to MP4. I'm thinking there must be some other way to speed this up. I'd much rather go for a ...
1
vote
1answer
83 views

What kind of video encoder can do this? Blend multiple video frames together live

How can I recreate the effect in the video above? Having multiple camera frames blended together in a live stream Preferably better. I need some kind of video ...
1
vote
2answers
46 views

Encoding Video For Archiving Using Premiere Pro CS6

I have a set of videos created in Premiere Pro C6 and currently I am encoding them in h264 for YT upload. The raws were taken using a Canon 700D @ 720p60. I was wondering what is the best encoding ...
1
vote
2answers
908 views

Why processor is “better” for encoding than GPU?

I was reading this article and I saw that a CPU is better for video compression than a GPU. The article only says that happens because the processor can handle more complex algorithms than the GPU, ...
1
vote
1answer
85 views

What parameters should I select to get a high quality voice .wav file?

I'm trying to generate a high quality .wav voice-over using Microsoft Speech API. What should be the values of following parameters (they are part of this constructor): int samplesPerSecond, int ...
1
vote
2answers
261 views

ffmpeg re-encode libx264 without quailty loss?

According to the documentation for libx264 (h264) encoding, we can use a preset of veryfast, faster, fast, medium, slow, etc. https://trac.ffmpeg.org/wiki/Encode/H.264 ...for constant quality ...
1
vote
1answer
21 views

Large avi not playing to the end

I have recorded a 20 minutes game session from Minecraft using Kazam and saved the result as a 80 gig avi. When I try to open the file though only the first 8-9 minutes are played. Selecting it as a ...
1
vote
1answer
523 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
2answers
81 views

What is the optimal codec and encoding parameters to encode Video Podcast?

I've got recorded PowerPoint presentation (video podcast) - static slides, mainly texts, some static infographics with voice of the presenter (speech only). It lasts about 1 hour and encoded to .avi ...
1
vote
1answer
106 views

Workflow for trimming, encoding, and publishing videos to the web

Basically, companies will be giving us access to a variety of videos in a variety of formats. We will then download the videos, trim out the important part in a 5 min and/or 10 min chunk. From ...
1
vote
1answer
649 views

MP4 video rendering differently on different browsers and different machines

I have asked a similar question before, but we are still having the same issues. Background color of MP4 rendering incorrectly in QuickTime I am trying to encode MP4's for playback on a website. I ...
1
vote
1answer
31 views

After Effects - output formats

Why do I only have these formats in my output? Where's Windows Media Format?
1
vote
1answer
30 views

H.264 encoding in PowerDirector 10

I want to make videos for youtube, and I want to encode my videos in MPEG-4, but the PowerDirector 10 says that I need to activate the video codification by hardware and I activated it in the ...
1
vote
1answer
26 views

Exporting to multiple formats

these days we usually have to export our videos to multiple delivery formats - HD variants for projection, and we tend to have different settings for vimeo, youtube, and the other versions we might ...
1
vote
2answers
273 views

mp4 video exported from x265 does not play

I use x265 to encode a video and the output is mp4. Unfortunately, this file is not playable by any program. The input video is yuv if that matters. Do you know which the problem might be? Thank ...
1
vote
3answers
205 views

What setup do I need to record and render at the same time?

I need help figuring out how to record while my computer is rendering. I am very new to video editing, so this is my current workflow. First, I record footage using Fraps (30 fps, 1080p, .avi). I ...
1
vote
1answer
169 views

Letterbox when converting 4k to 1080p

Got handed a pile of stock footage downloaded from various sites. And found one clip is 4k ( 4096x2160) I put it into AME to reexport it as DNx115 but when I set it to 1920x1080 23.976 I see ...
1
vote
3answers
69 views

Why does audio have standard bit rates whereas video does not

I got into live streaming recently and while I was reading up on encoding settings I noticed that even though there are rules of thumb, there doesn't seem to be a standard set of bit rates we could ...