Questions tagged [codec]

A 'coder-decoder' computer program capable of encoding and/or decoding a digital data stream or signal.

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704 views

AAC with no global headers is currently not supported

As per ffmpeg bitstream filter documentation, if we use -bsf:a aac_adtstoasc then the AAC stream from a raw ADTS AAC or an MPEG-TS container to MP4A-LATM. https://ffmpeg.org/ffmpeg-bitstream-...
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26 views

codec/container with additional reconstruction information for archival?

Are there (open source) codecs that support additional recovery information to be added during encoding to allow for an improved recovery from corruption? Application would be data archival of videos ...
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469 views

One flac file - many tracks - no cue - yet it's 'split' somehow

I have a music album in one FLAC file. There is no CUE file. When I try to play it with VLC or CMUS, it doesn't recognize individual tracks and plays it as one large file. BUT if I import it into Vox ...
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1answer
491 views

Is 4K 4.2.0 just HD 4.4.4

I've been reading about codecs lately and found out, that the 4.2.0 codec combines 4 pixels color to one used for all 4 of them, effectively lowering the filesize. Now how does this compare to a ...
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1answer
283 views

FFMPEG frame extraction

I have couple of video files with sudden transition from black frame to blue frame, both frames have burned-in frame numbers, I would like to use ffmpeg to define the timestamp of this transition in ...
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79 views

Best lossless codec [closed]

What is the best codec at the moment without losses? HEVC, or is it faster / more compact? In HEVC there is a lossless mode. On the Internet did not find the actual information for this year.
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430 views

FFMPEG - MAC OS Cannot Capture from Black Magic UltraStudio (Thunderbolt)

I have Black magic UltraStudio Express that captures SDI or HDMI and Connected to MacBook via Thunderbolt when I list devices I get the Audio but not the video : $ ffmpeg -f avfoundation -...
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2answers
474 views

Lossless color compression

I need to reduce the file size of an mp4 video. I don't need color information at all but pixel brightness resolution must be preserved. Videos consist of white background with a few (important) black ...
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337 views

Lossless and lossy compression techniques

Are MPEG and H.264 Lossless?? I need a brief explanation about lossy and lossles... And which compression technique is generally using in CCTV Surveillance applications of video??
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1answer
93 views

Understanding containers and codecs

To my understanding, there is the container format (MP4, MOV, 3GP, AVI) and the codecs (Theora, VP8, H264, XVid, DivX). For what I understand, the container format and the codecs are independent and ...
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1answer
3k views

How do I check codec for a video(mp4) in windows 10? [duplicate]

I'm devleoping an Android application. The official site lists all the codecs which are recommended for videos in Android platform. I have 2 videos. One of them cannot be played by Android. I would ...
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220 views

What does codec stand for?

Does codec stand for compression or decompression? I have also heard it stands for encoder/decoder. Which is it? Maybe something entirely different. I'm looking for a source better then Wikipedia.
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Which lossless RGBA codec should I use for share animations sequences between my different video software?

All is in the question. For the moment, I use PNG image sequences which is cool but sometimes I wonder if a better option exists. I heard about HuffYUV but I never tried it because it wasn't easy to ...
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1answer
81 views

Does increasing the framerate while not changing the content affects compression quality?

This question has no practical importance for a regular video production pipeline, but nonetheless it's something I find fascinating because it would imply video codecs use temporal sub-sampling ...
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1answer
2k views

Originally smooth unicolor background shows “steps” in the color gradient when exporting

I am using Abode Premiere Pro. I am working on a video which has a static background. The background is almost unicolor with a light color gradient. Please see here: I want to export the video. The ...
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1answer
310 views

AVI Capture in VirtualDub: MP3 Compression

I would like to capture my old VHS tapes to my HDD. I already was successful installing the xvid codec which gives me an acceptable video compression. But somehow I am not able to set audio ...
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2answers
483 views

Codecs with allow fast backwards stepping frame by frame with mpv

According to https://github.com/mpv-player/mpv/issues/4019 backward stepping for example with H264 codec is slow compared to forward stepping. Other codecs, for example mjpeg works a bit better. For ...
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1answer
1k views

Why can't my video play from where I drag the playback bar?

I am stuck and really do not know how to explain it in correct manner. Thus I put it in the layman details. I have two 30~ second length mp4 videos saved in cloud storage. video1 is generated by ...
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1answer
7k views

how to use h264_omx on RaspberryPi

I'm using RaspberryPi 1gen B+, for push stream to web through rtmp. But I find my CPU usage came up to 90%+. This is how I use it: ffmpeg -re -f concat -safe 0 -i playlist.txt -vcodec copy -acodec ...
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1answer
1k views

encoding with ffmpeg libx265 -pix_fmt gray gives unplayable vid

What am I missing? I encode an old black and white film clip with ffmpeg libx265 passing -pix_fmt gray. The output is unplayable in both vlc and mplayer (linux), so I assume I'm missing something... ...
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1answer
29 views

Suggestions/Ideas for a “Show Me” project for school about Audio or Video Encoding?

Basically, I need to make a quick "Show Me Something Cool" project for my physics class. It could be about anything sciency, that is cool, and that you can explain & demonstrate in class in like 5 ...
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1answer
407 views

Quality of time lapse from images

I'm planning on creating a time lapse from a series of still images. I plan to shoot the images in raw (Nikon NEF, Adobe RGB), then edit with Photoshop and export as jpegs (highest quality). I am ...
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2answers
2k views

What are the best codecs and encoding options for a image sequence video?

I am trying to make a video out of an image sequence - Where each frame lasts for a second. The image sequence contains the same object shot from different distances. I'm guessing most default ...
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0answers
711 views

How to speed up DNxHR HQX capture with ffmpeg?

I'm trying to capture DNxHR HQX to my SSD. I want HQX because I need the 10-bit color for grading (HQX is a 12-bit codec, but HQ and below are all 8-bit). 8-bit HQ recording is no problem; I ...
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1answer
151 views

Please Explain the Codecs in my Example [closed]

Can someone explain what's happening in my project? Please use as much detail as possible, I just want to learn, thanks. I have an Apache web server. It contains many videos (.mp4 .mkv which are ?...
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1answer
3k views

Problems opening 3GP files in Sony Vegas 12 64bit

My system crashed and i reinstalled windows, including Vegas. Projects that included 3GP files (GSpot says that the codec is MP4V), now cant link the 3GP files. Vegas says files are offline, i ...
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1answer
4k views

ffmpeg convert mp4 to mov with dnxhd codec

I'd like to convert an mp4 file to DNxHD for use with DaVinci Resolve. Here is my attempt of doing the conversion using ffmpeg: C:\FFMPEG\bin\ffmpeg.exe -i "H:\Downloads\test.mp4" -vcodec dnxhd "...
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1answer
576 views

.mkv file not playing in HEVC/H.265 supported player

I wanted to play UHD (4k) videos in my new LeTV (Super3 X55). So I used youtube-dl to download 4k YouTube videos (which are humongous btw) but for some reason most of them do not play. The TV's ...
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1answer
2k views

ffmpeg: Convert 4K 10-bit file to DNxHR 444

I have a 2160p29.97 AVI 10-bit RGB file recorded with a Blackmagic Intensity Pro 4K capture card. I want to convert this file to DNxHR 444. I used the following command to do so on Windows 10 with ...
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1answer
7k views

ffmpeg: how to convert to DNxHR in Windows 10?

I have installed ffmpeg version 3.2.2 from the ffmpeg.org download page. When I enter ffmpeg formats, I see dnxhd but not dnxhr. What do I need to do to be able to manipulate dnxhr? I have ...
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2answers
4k views

ProRes444 Codec download process to Adobe Media Encoder

I am using MacOS Sierra and am trying to download the ProRes444 Codec in order to export my Adobe After Effects 4k RED footage in this format (probably using Adobe Media Encoder based on what I have ...
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1answer
10k views

Container format requires global headers

Using this FFmpeg: ffmpeg-20160127-git-9079e99 With this file, if I run this command: ffmpeg -i Miaow-02-Hidden.m4a -c copy outfile.m4a I get this message: [ipod @ 0000000000694500] Codec for ...
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147 views

Quicktime PNG codecs turn blue on most recent Premiere Pro CC update

I recently updated my copy of Premiere CC to 2015.4, and many of my downloaded effects overlay videos turned blue. (Attached is a blood spray effect). These were all downloaded from the website ...
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2answers
314 views

Do a sort of HEAC - High Efficiency Audio Codec exists?

As HEVC - High Efficiency Video Codec (h265) can be considered a a sort of upgrade of AVC - Advanced Video Codec (h264), is there a similar "upgraded" audio codec compared to AAC - Advanced Audio ...
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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
34 views

Most common formats that don't require any software or CODEC installs

I have a small MP4 file that I need to send to someone on a USB stick. Without knowing anything about the PCs that this person has access to, how can I be reasonably certain he will be able to play it ...
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1answer
4k views

How to open MP4 container video with mp42 codec in Vegas Pro?

I've been given an MP4 video with the following information, per MediaInfo General Complete name : E:\306G5562_01.MP4 Format : MPEG-4 ...
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3answers
88 views

How to learn all about video editing?

I have been self learning about 3D art(especially using blender) and have reached a level where I can make some use of my skills on a productive scale. (Even though blender has an integrated VSE) I ...
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1answer
2k views

Audio can be heard only in VLC player, but not in the editor

I have few files that I did retrieve from webpages, and saved as MKV files. VLC play them without problems, but when I load the file either in the Windows video editor, or in Power director 13, the ...
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1answer
500 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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1answer
2k views

best alternative to QuickTime .mov

My company is stripping away QuickTime enterprise-wide, due to Apple dropping support for the format. I use After Effects and Premiere, and others in my group are on Avid Workstations. Occasionally ...
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1answer
14k views

how to get vdpau hardware acceleration using ffmpeg?

I am developing a multimedia player using ffmpeg. I am trying hard to get hardware acceleration through ffmpeg using vdpau hardware accelerator. I didn't get any success so far. Below I have mentioned ...
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606 views

Virtual webcam with MJPEG output

I have an very specific situation maybe someone can help with. The short story/question: Is there a virtual webcam software that can output as a virtual webcam in the motion JPEG (MJPEG) format? ...
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0answers
102 views

No -external codec- option in bandicam 3.0.4

I am using Bandicam 3.0.4, and I want to use the Lagarith Lossless codec. I installed it from the official website, and then I used a tutorial on Youtube to select it. According to the tutorial, I ...
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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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428 views

MediaInfo Fourcc Values

I'm trying to figure out what fourcc value I need to use but I'm a bit confused between file formats and codecs. I have a .mov file and MediaInfo reports it as shown below I need to specify the ...
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0answers
149 views

Video codec for progressive enhancement

JPEG has a progressive enhancement mode where a full frame can be downloaded quickly at low quality, and then the quality enhanced as the file is continually loaded. (Example image from http://...
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1answer
834 views

How can encode video with images like these (overlay a video over a fixed image) with ffmpeg?

How can encode video with images like these help me ffmpeg ?
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2k views

Canon Vixia HF R600 - MP4 vs AVCHD

I just bought a Canon Vixia HF R600. It's giving me the option to save files as AVCHD or MP4. I will be importing them to my PC and editing them in Adobe Premiere CC. I'd heard that AVCHD has a ...
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3answers
271 views

Missing video codec in Quicktime

I have a quicktime video recorded on a Atoms Shogun. When I tried to play the file it is only playing the audio and no video is coming up at all. Delving deeper, I found out that no codec for the ...