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

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9
votes
4answers
23k 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 ...
6
votes
2answers
675 views

H.264 or VP9 for encoding for YouTube?

I make short films which I distribute through YouTube. I know YouTube uses VP9 for streaming, but YouTube still recommends uploading with h.264. It makes more sense to me to upload in as similar a ...
6
votes
4answers
2k views

How to encode apple ProRes on windows or linux?

Is it also possible to encode video with Apple ProRes on windows and linux?
5
votes
3answers
1k 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, ...
5
votes
3answers
113 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 ...
5
votes
1answer
66 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 ...
5
votes
1answer
400 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
721 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
2answers
6k 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 ...
4
votes
3answers
197 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 ...
4
votes
2answers
176 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
4answers
911 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
213 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 / ...
3
votes
2answers
998 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
573 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 ...
3
votes
3answers
8k 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
145 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
1answer
7k 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 ...
3
votes
2answers
278 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 ...
3
votes
1answer
27 views

MPEG - the maximum range for R,G,B?

There are sentences: For analog video or MPEG (including DVD) output, the maximum range for R,G,B is [16, 235] (8-bit). For YUV, the maximum range for intensity (Y) is [16, 235] (8-bit). Is this ...
3
votes
1answer
1k 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 ...
3
votes
1answer
43 views

Container Type that doesn't corrupt on Encoding Crash

I've been produce videos on YouTube for a few years. I understand a vast majority of encoding options for x264 (My preferred encoder). I used to use MPEG-4 containers (.mp4) with my videos, however ...
3
votes
1answer
126 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 ...
3
votes
1answer
40 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 ...
3
votes
3answers
69 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 ...
3
votes
1answer
261 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
3answers
210 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
4answers
716 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 ...
2
votes
2answers
5k 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, ...
2
votes
1answer
66 views

Convert resolution 4096x2304 to 3840x2160 keeping the quality the same

I have recently come into possession of a couple of 4k movies with a resolution of 4096x2304. Unfortunately my Samsung 4k TV wont play anything over 3840x2160. I have managed to re-encode the videos ...
2
votes
1answer
30 views

Is there a way to get the bitrate of a specific region of a video?

I have some videos I recorded with my cell phone that I want to crop using Avisynth's crop(). I am using x264vfw with VirtualDub which asks for a target bitrate. I usually just get the bitrate from ...
2
votes
1answer
254 views

how to Rotate a 3gp video without re-encoding

I created a video in my cellphone holding the phone in portrait mode. The video is 720p and it looks perfectly fine in cell phone. I copied it on computer and when viewing it, the video looks 90 ...
2
votes
1answer
520 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
1answer
58 views

Auto upload (ftp) video file once it's finished encoding

I'm in a live production, and I'm clipping hundreds of short videos all day every day. What I'd like to do is use some application to set a watch folder, and as soon as I hit stop on the encoder, and ...
2
votes
2answers
86 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 ...
2
votes
1answer
2k 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
635 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
1answer
168 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
57 views

Encode video for html5 and javascript controlled playback

I want to create something like Apples Mac Pro product page http://www.apple.com/de/mac-pro/ where html5 video playback is being controlled via javascript (by manually setting the currentTime ...
2
votes
1answer
45 views

After Effects - output formats

Why do I only have these formats in my output? Where's Windows Media Format?
2
votes
1answer
185 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 ...
2
votes
3answers
121 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
79 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
4answers
57 views

Live streaming to a disk

Not sure if this is the right place to ask this question (pretty technical), but I thought I'd start here. I'm interested in building a website that will have a streaming-video feature. It's not ...
2
votes
0answers
48 views

Problems occurred when importing subtitles into Sony DVD Architect

I'm new to Sony DVD Architect, I can't import subtitles into DVD-Arc even though the file extension is .sub. I used Subtitle Edit to save my original subtitle file(in .ass format) to DVDSubtitle(.sub) ...
2
votes
0answers
77 views

Why is audio generated by avconv choppy?

I am using avconv to generate an AV stream, and the video is perfect, but the audio is very choppy using iOS Safari. Can anyone tell me what is wrong with my audio stream that's causing this? When ...
2
votes
0answers
26 views

How to see encoding progress in Compressor 4.1.3

Is there really no way to see progress of an encoding job in Apple Compressor 4.1.3? I started a batch (single job, one file) and this is all I see: My fan is blowing at full speed so I guess ...
2
votes
0answers
262 views

Fast encoding with ffmpeg

I know about presets but faster presets lose the video quality. Are there any hardware requirements I need to consider? Or are there any settings that I need to tweak? And lastly where do I place the ...
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 ...
2
votes
0answers
67 views

What hardware should I get for a conversion farm for MXF => Prores

I currently use a mac pro for importing mxf files into FCP (equivalent to converting to prores, I believe) at about 3x realtime @29.97fps. I want to get a machine to run ffmpeg & do the ...