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

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2answers
19 views

How can I efficiently convert MOV / MPEG-4 files for long term storage?

I have a Canon 6D DSLR that I am shooting video on. The camera is set to capture 1280x720 60fps IPB MOV / MPEG-4 files. The video files are in the range of 250MB per minute of recording. I have ...
1
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1answer
48 views

What is the correct MPEG-2 FourCC?

In my attempts to encode a video to MPEG-2 in an MOV (which seems to be a valid combination, at least according to Wikipedia), using ffmpeg (-vcodec mpeg2video) and other tools, I have become ...
0
votes
1answer
21 views

How to avoid uploaded video being re-encode by Facebook

I just uploaded a video to Facebook yesterday, and then I tried to download the video as HD, and I realized that Facebook actually re-encode the video even though the original video file doesn't ...
5
votes
1answer
65 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 ...
0
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0answers
18 views

H264 vs H265 encoding time issues using B-frames

I run video encodings using H264 and H265. In H264 using JM reference software GOPs having B4 need greater encoding time than having B2, and GOPs having B2 need greater encoding time than B0. In ...
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, ...
0
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1answer
15 views

Exporting a video from Premiere spits out incorrect quality

I'm trying to export a video from Premiere(CC) with the following settings: I recorded this video in Motion-JPEG 1080p/60Fps out of Bandicam. I've recorded videos in Bandicam (same settings as ...
0
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1answer
58 views

Encoding videos for MPEG-DASH

I read this article on encoding for MPEG-DASH, which has helped me a little and then follow up article. My end goal is to create a batch file that can read in a directory of MP4 files, and then ...
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 ...
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 ...
0
votes
1answer
27 views

how to measure bitrate of video over time

Given an encoded video file with non-constant bitrate, how would one analyze the bitrate over time? So far I found one old program that produces a bitrate plot, but none that can give the raw data of ...
1
vote
1answer
23 views

How to convert an mkv file with hevc encoding to mkv with avc

I have some mkv files with a hevc encoding which is not allowing me to burn to disc in covertxtodvd as it shows no video track as the encoding isn't supported, i was wondering if it was possible to ...
3
votes
1answer
26 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 ...
1
vote
1answer
68 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 ...
1
vote
0answers
29 views

FFMpeg encode with original codec

I know about the -c copy switch with ffmpeg, but this does not work with filters as it means "don't re-encode". But what I want is to have my output use the same stream formats as my input. So if I ...
0
votes
1answer
173 views

FFmpeg/Avconv unable to copy subtitles; Unsupported codec?

I've got an mp4 file with these streams (avconv -i file.mp4 or ffmpeg -i file.mp4): Stream #0.0(eng): Audio: aac, 48000 Hz, stereo, fltp, 125 kb/s (default) Stream #0.1(eng): Audio: ac3, 48000 Hz, ...
1
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0answers
73 views

best way to publish low latency video on ffmpeg

I am trying to publish a stream of live video that need to get to the client side in under 3 sec in latency. I am using vMix to capture a 720p/50 stream from a camera, that by virtual camera letting ...
2
votes
1answer
55 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 ...
5
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?
2
votes
1answer
65 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 ...
1
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0answers
150 views

Is there a simple explanation of x264 encoding parameters?

So, x264 is still the most popular (free) H.264 encoder out there. But it is also still considered ridiculously cryptic as well. There are tons of switches and options in the encoder that allow you to ...
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
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0answers
47 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
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 ...
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
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 ...
6
votes
2answers
647 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 ...
2
votes
1answer
252 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
0answers
74 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
254 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 ...
3
votes
1answer
125 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
45 views

After Effects - output formats

Why do I only have these formats in my output? Where's Windows Media Format?
4
votes
2answers
170 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
906 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 ...
1
vote
2answers
101 views

What is the difference between AVCHD and ProRes in terms of quality?

Depending on the project and the camera of course I often have to work with ProRes or AVCHD codecs without any thoughts. I assume that the code and the compression algorithm certainly is very ...
1
vote
2answers
394 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 ...
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 ...
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 ...
3
votes
2answers
206 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
2answers
85 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 ...
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 ...
1
vote
1answer
33 views

Player support for video DVD stored on a CD-R?

I want to produce many playable DVDs using a few burners (setting up a computer lab with each computer having an image of the same) I have close to no budget for this and am curious if a standard CD ...
1
vote
3answers
2k 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 ...
5
votes
1answer
397 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 ...
1
vote
1answer
36 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 ...
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 ...
0
votes
1answer
304 views

Variable Bitrates for Streaming?

I'm building presets for our users to convert the videos into an appropriate format for our online video repository. Since it's been awhile since I've built something like this from scratch, I've been ...
0
votes
1answer
4k views

Faster deinterlacing with ffmpeg and yadif

We are using two-step encoding with ffmpeg to encode raw .mov files to multiple .mp4 encodings ready for streaming over the Internet. Some of the videos are interlaced and we are using yadif to ...
0
votes
1answer
198 views

What do I need to learn in order to repair an ogv or ogg video that is defective? Where to start?

I recorded a video chat session with recordmydesktop in linux, but it is somehow defective. I give more details in a (big) footnote down here. I badly need to repair and play that video. Please put ...