Questions tagged [encoding]

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

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3answers
937 views

Is there a way to improve quality for videos with snow/confetti/LCD in background?

The effect I'm referring to: Essentially, the snow/confetti in the shot means lots of motion, hence a lot of the available bitrate is taken up by it, thereby ...
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1answer
1k views

How to encode from Premiere using nvenc Nvidia codec but still output to mp4/avi

Using Nvidia's gpu accelerated codecs to encode videos is a massive time saver, it brings my encoding times down from 2 hours to 2 minutes with pascal GPU's however the problem with the codec that I ...
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1answer
982 views

openload.cc How can I extract encoding settings of videos?

My customer needs streaming service for his IP cameras and he ask me about same output quality as videos in openload.cc but I can´t simulate similar quality.I tried several encoding combination but ...
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2answers
566 views

Is it worth re-encoding GoPro footage to H.265?

Considering that I'm not a professional editor and only record some random skateboard, snowboard or just some travel footage around with my GoPro Session 4, is re-encoding to H.265 to save storage ...
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0answers
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Building a new PC - What should I spend money on - CPU or GPU? [closed]

I've been given the task of building a new PC for my job - because there is a lot of video encoding coming up in the future and my current PC won't really hack it. Now I kind of have a budget of ...
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2answers
446 views

Which filter and what parameters should I use to deinterlace this video?

I want to use a small part of this video: . It has very bad interlacing that I need to get rid of. I downloaded the mp4 file, which is 1920x1080, 29.971 fps. I don't ...
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2answers
55 views

Why can't modern video cameras be used for live streaming without a capture card?

I'm just curious what the physical limitation is now-a-days that connectors like USB-C and thunderbolt exist. In the past I thought the issue was that the encodings that video cameras put out (...
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1answer
859 views

ffmpeg / mencoder converting a video with correct setting

I have an avi video file that plays on my Onn-W7 player Link to avi video file that works and backup link to avi file that works. I'm trying to convert some other video files over so that they will ...
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0answers
54 views

Converting 1080i5994 DNxHD HQ to 1080p

I recorded some long format talks in 1080i5994 DNxHD via my atomos recorder. I do this all the time and never have any issues. I record in that format because thats what my switcher puts out and it ...
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1answer
340 views

What's the encoding difference impeding playback on iOS?

A video used on a website doesn't want to play on iOS devices. The video was encoded by another person using Sony Vegas, with settings similar to what I used before (although I used Adobe Premiere). ...
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1answer
57 views

How to optimize h.264 to play it on every possible device

I coding videos in MP4 for my windows phone, but now I want to be sure that this videos will be played on every mobile device possible, so question is: What the best unified settings for H.264 codec I ...
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1answer
1k views

Downloading earlier segments from a live m3u8 playlist

I have an .m3u8 URI of type LIVE. As far as I know, live playlists use a sliding window instead of containing all the segments. My questions are, 1) Is it possible to find out what the length of the ...
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3answers
129 views

Trading off resolution vs quality

I have some 720p 30FPS H.264 video that I want to downsample for online backup. I want to get to somewhere around 10% to 20% of the existing size, which will evidently require a large sacrifice in ...
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1answer
74 views

Best encoding to fit 10hours of 1080p in 30gb?

I will be running a 10hour loop on a 1080p screen with only 30gb of storage. The loop will be created from a variety of 1080p .mp4s that will need to be compressed. (for example, one video is 12mins ...
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1answer
907 views

How to create MPEG-DASH variants at resolutions where one dimension is not a whole number in pixels?

I've created a bunch of variants and a DASH manifest for Sintel, which more or less works, but does not pass validation. The issue is when I want to scale a video to a specific width, but the height ...
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1answer
830 views

Batch encode to X265 on the Mac

I need to encode thousands of MP4 H264 (mostly) files in a folder hierarchy to H265. Unfortunately Handbrake that I'd normally use have dismal support for batch processing of hierarchies. The ...
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1answer
499 views

Is there something like nvenc for free codecs (VP8/9)?

I'm new to video encoding. And I was looking at h264/265 and VP8/9. I'd like to use VP8/9. But it seems like nobody except Google is pushing it. I just want to know does someone else support VP8/9? ...
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2answers
1k views

Using mediafilesegmenter on a video with edit lists

I'm trying to use mediafilesegmenter on a video I transcoded with ffmpeg to package it for HLS. However, it complains about "edit lists" and refuses to do anything. Does anyone know how to either ...
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0answers
429 views

MPC-HC is altering the colors

In order to test a lossless recording system, I have to verify that the input video is exactly the same than the output video. As a test source I have generated an ffmpeg's testsrc pattern, which is ...
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1answer
80 views

Is there a mathematical equation to compute the bitrate of a Cisco H.264 stream?

I'm working on adaptive streaming for video. As I'm using a Cisco Open H.264 Encoder, I'm testing multiple configurations for the encoder. A configuration consists in a several of parameters (bps, fps,...
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1answer
7k views

x265 encoding test: 12bit results a bigger file size than 8bit of the same config?

Just got curious of this x265 HEVC format, and tried it on a 1920x1080i BDMV stream video, one encoded with 8bit depth and then another encoded with 12bit depth. The results are, the 8bit output was ...
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3answers
151 views

Modify video file for viewing in generic media player

I have a file called ~/somePath/foo.264, containing video from a surveillance camera's DVR. I am unable to view this video on several media players including the default media player on an Apple ...
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2answers
825 views

How to calculate the length of the video file that was encoded so far?

I am using ffmpeg to convert a video file to H.264 format. If I call ffprobe while ffmpeg is still running the duration of the video is not known. Only when ffmpeg finishes the ffprobe will display ...
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1answer
840 views

Using AAC-HE for 5.1 audio?

A couple of questions when thinking about 5.1 audio encoding: What are the limitations of AAC-HE codec while doing 5.1 audio ? Why is AC3 preferred when compared to AAC-HE ?
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6answers
4k views

Does repeatedly saving a video degrade its quality?

I take a video file, let's say an mp4, and use, let's say Windows Movie Maker, to repeatedly just save it, with no edits. Every time, the software has to convert the video into a format it can edit, ...
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2answers
5k views

Removing MP4 encoding information

Is it possible to remove certain information form a MP4 file? Specifically things like tagging and encoding dates, Writing library and application, Encoding settings... No client needs to know when I ...
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2answers
28k views

8bit vs 10bit vs 12bit

I do a lot of HEVC encoding and what I've read is 10bit is always better than 8bit, even from an 8bit source, because it avoids rounding errors. Is that true? Also, then is 12bit better than 10bit or ...
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1answer
2k views

Convert 1920x1080 Video to 720x480 With Letterboxing

I'm trying to find the best application on windows to do this HD to SD conversion for a video server which requires files to be exactly 720x480/29.97fps MP4 H.264 to function. I can't find any options ...
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1answer
270 views

Netflix encoding system - MAPLE

I understand that Netflix does all their encoding in AWS using EC2. They have a custom encoding software called MAPLE that chunks all source video into 2-3 second chunks and encodes in multiple codec ...
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1answer
985 views

Quicktime rendering issue

I am trying to export my composition from AE CC but when I hit 'Render' nothing happens. In status is says 'Rendering' but this is not the case and the cursor looks like it's working but nothing is ...
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1answer
5k views

How should I encode my 4K video stream?

I'm capturing uncompressed 4K video from my Sony A7R II via a video capture device, and am using ffmpeg to save the video. My problem is I don't know what codec to use. The two options I tried are: ...
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1answer
3k views

What are supported stream formats for h.265

I wanted to know what are the possible streaming formats for streaming a video using H.265. Does H.265 support rtsp and rtmp based streaming? Currently, I am using ffmpeg to live stream the camera ...
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1answer
1k views

How to prevent lossy re-encode of low-bitrate videos uploaded to YouTube

I have a huge number of low-res Flash videos (480x270, 30 fps, 800 Kbps) and I want to resample all those videos in 1280x720 with some added spatial sharpening and lomo filters to make them look nicer....
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1answer
231 views

How can I avoid Quicktime Vulnerability with h.264 encoded MP4 files?

I posted this earlier on SuperUser, but realized that this is likely the more appropriate forum for my question. We have several thousand very large MP4 files that have been encoded over the past ...
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0answers
5k views

Adobe Premiere Pro and Media Encoder crash on encoding

Well, I can't export anything, Premiere Pro or Media Encoder keep crashing. Crashes are quite unexpected, after several minutes or several hours, without any explanations: "Adobe [--] stopped working"...
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1answer
142 views

Best format to export to in blender

I am using blender video sequence editor feature. When I export my video I have subtle quality loss. There are mild flickering artifacts. I have a couple question related to that. First one, is what ...
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2answers
480 views

Recompressing many huge MOV files

My camcorder produces huge MOV files, and I use it for about 1 hour every day, which gives me more than 7 GB of data per day (around 128 MB per minute of recording). Here is the codec information ...
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1answer
61 views

Best Streaming Encoding Software to incorporate a message feed

I am trying to stream a weekly boardgaming video podcast. I was hoping to incorporate a message feed to video. I want the people playing the game to be able to show watchers their strategies without ...
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1answer
340 views

To MP4V, or to DX50, or not to be

Should i compress my final outputs down to FOURCC of DX50 or MP4V? Tis the question. I'm having a hard time deciding on this, since im not really sure what to expect in future technology development....
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2answers
92 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 ...
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1answer
2k 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 ...
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2answers
2k 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 ...
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1answer
403 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 ...
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1answer
23k 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 ...
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1answer
1k 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 ...
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1answer
751 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 ...
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1answer
137 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 ...
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1answer
909 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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0answers
1k 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 ...
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1answer
2k 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, 5....