Questions tagged [codec]

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

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In which codec and file format I should shoot video in camera to avoid problems with editing video in video editing software?

I want to shoot few videos. Next step I will edit them in some video editing software. Maybe OpenShot, Shotcut, Kdenlive, DaVinci Resolve. Maybe any else. In which codec and file format I should ...
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13 views

Merge multiple video files using ffmpeg by adding multiple compress options

I would like to merge multiple video files, performing in the same time complex compressing options. How can I do that? The following ffmpeg command resulting this error: Filtergraph 'scale=1280:...
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24 views

How do I get Windows Media Player and other tools that depend on system codecs to play this video file?

I have a video file that plays fine in VLC, but only shows 100% black frames in Windows Media Player, and in other applications that depend on system codecs (for example in MATLAB, which is where I ...
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15 views

Save video with the exact quality of the source file

I have never had success in saving file with same quality after editing. Either it was much bigger, or quality was worse (square blocks etc). I thought MediaInfo program would help, i used to check ...
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12 views

How to play/edit AVC1/MP4 in Premiere Pro on Windows XP

Premiere Pro 1.5 has served me well editing the footage from my MiniDV tape camcorder. However now I have a new camera (in my smartphone) and the videos from that won't even play on my editing PC (...
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29 views

FFMPEG -C:V Copy and -C:V Transcode

When I do it like this, -c:v copy -preset ultrafast -cfr 20 -tune zerolatency and it doesn't work I know that this is excpected because the video codec is copied and all the other parameters such as ...
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1answer
48 views

FFmpeg convert G.711 Audio to AAC Audio

Is it possible at all to convert G.711 audio to AAC audio in a stream using ffmpeg? My cam is streaming fine in Chrome (video + audio) but all the other browsers have no audio. I would appreciate any ...
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26 views

Best render settings for youtube

I am using Vegas Pro as an editing tool for my videos. What codec (currently using x264vfw) and settings are best to render 1080p 60fps video for YouTube if I don't care about either rendering time or ...
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1answer
21 views

Network Stream reloading in a loop (Nginx/RTMP Streaming Server)

As the generic title suggests, I do not know exactly how to explain my problem, neither do I know what could cause it. Hopefully this ends up to be the right place looking for help, as I do not find ...
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1answer
15 views

Where to get codecs?

I have a two part codec question. I want upload a 100 min video to YouTube. Export size from Premiere Pro is 22GB on disk. Here are the only Codecs I have installed: I'm new to this, and was advised ...
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171 views

How to make video play with correct aspect ratio

I have the following issue: I have a video file (h264) that plays with the correct aspect ratio in mplayer. However, if I load it into Intel's Computer Vision Annotation Tool, or if I re-encode the ...
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28 views

Best video format for a retired PowerPC (iBook G4)?

We have a retired iBook G4, it plays H.264 quite laggy. My question is what is the best video format optimizing for Battery Life on a PowerPC? Bonus question: Is there a free batch converter for ...
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970 views

How I can play an Amazon Prime Video movie with Dolby Digital Plus audio using Chrome browser in my PC?

Currently my web browser Chrome (last version 80) cannot play Dolby Digital Plus audio. I know this audio is used in other devices like Apple TV, Roku, or Amazon Fire TV for example. According to ...
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17 views

Can I make m4v files “better” before archiving? (adding keyframes, or lossless optimization, or ?) [closed]

I've got a decent bitrate DVD rip of an animated TV series, and before sending it to it's forever home (currently my PS3's extra HD space), I was wondering: can you take existing m4v files and make ...
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206 views

Green frame in iMovie export

I exported a movie from iMovie from a theater play of about 1 hour. By chance, I found that one of the frames was completely green: whereas the other frames are mostly black or dark. The settings ...
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1answer
32 views

Shooting short clips vs. cutting long clips

Say I want to create several short clips with the original encoding of a certain camera. Do I have to shoot the short clips directly or can I shoot a long clip and then cut it up using ffmpeg with the ...
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28 views

Is there a slideshow codec?

Is there a video codec that deals well with slideshows? A substantial fraction of videos are slideshows with an audio track. An appropriate video codec would compress to little more than the audio ...
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1answer
152 views

Errors in FFmpegSource2 plugin source filter for AviSynth

I was unable to read MTS or MP4 files in AviSynth. Can AviSynth handle MTS files? pointed to the FFmpegSource2 filter, with information on the wiki. I downloaded the plugin and pointed to it from the ...
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1answer
44 views

Can AviSynth handle MTS files?

I want to process MTS (MPEG Transport Stream) files from an AVCHD camcorder in AviSynth. Displaying with AviSource() says that the file couldn't be opened, displaying with DirectShowSource() says that ...
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1answer
109 views

FFmpeg convert to HD video format that Adobe Premiere Pro will not crash on?

My problem is somewhat similar to others asked on the site in recent years, but none of those solutions were quite right for my problem: I have a series of frames from a video recorded at roughly 30 ...
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17 views

Video not playing in mac

I use a OnePlus 6 mobile for recording videos and so far I have never transferred the video to my Macbook Pro, however, I recently copied all my videos to learn video editing. All videos play ...
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13 views

RAW Format videos database

there is an online database for raw videos? I wanted to download some videos in RAW Format for a university work and I can't find none. The job I have to do is to encode the RAW video with different ...
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1answer
60 views

Smallest Possible Video File in H.264 Format

I am writing some unit-tests for a software that does some work with videos. To do so, I need a programmatically generated video file that is both small and legitimate in that it is actually a ...
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1answer
37 views

Best codes for different video formats

Is there a list somewhere on the internet to give a basic idea of what codecs are best for different video formats, for example, what codecs are best for MP4, MPEG, FLV etc?
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1answer
46 views

Video Quality Measurement test tool

I need to measure streaming video from various different codecs and be able to tell which one is better. What will be the best metrics to look for? Is there a free tool that can help with this.
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50 views

Can you encode intra-frame videos from inter-frame without loss?

I'm aware of the differences between intra and inter, but I'm not the most savvy about reencoding them after the fact. Is encoding with intra from an inter-coded video the same as if you originally ...
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1answer
60 views

Intermediate Codec for Resolve to Adobe Mediaencoder or Premiere Pro

I am editing in Resolve, sometimes I am also just Color Grading in Resolve, so I need an intermediate Codec between Resolve and Adobe Media Encoder or Premiere Pro. The size doesn't matter as much, as ...
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1answer
36 views

Some MP4s have keyframes on scene changes. Others seem to have random keyframes, or keyframes every X seconds. What causes this discrepancy?

Some MP4s have keyframes on scene changes; others have keyframes seemingly randomly placed, or placed every 5-10 seconds. I prefer the former, both for ease of editing and because, unless I'm ...
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2answers
283 views

Is using codecs matter if Facebook re-encode all the uploaded videos?

I usually encode with libx265 and libfdk_aac to get good quality and small file size for posting in Facebook. I use ffmpeg as follows. ffmpeg -i input.mp4 -vf -c:v libx265 -c:a libfdk_aac output.mp4 ...
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Is there a codec good for timelapse? Most of the time an egg is hatching, it is sitting there

I'd like to take a video of an egg hatching, but the space on the camera fills up before the action happens. Luckily, an egg before hatching is boooooring: 99% of the video is a still egg, sitting ...
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1answer
70 views

How to manipulate video codec errors using ffmpeg

I want to create a video full of codec errors like this: How can I manipulate ffmpeg parameters to create an output video like that?
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5k views

moov atom not found

I downloaded this video using youtube-dl's HLS downloader. The video was being HLS streamed using AES-128. Even though I could view it perfectly fine when it was being streamed in the browser, VLC ...
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1answer
71 views

Convert a non-supported/obscure codec to a supported codec

I currently work with a team of researchers and we are obtaining data from videos that are encoded with SMB8, they are AVI files. We couldn't find anything on the SMB8 codec online unfortunately. We ...
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1answer
217 views

Which Blackmagic codec to choose?

I purchased recently a new BMPCC 4K and I'm facing a big problem with file sizes... The files are tremendously huge, so I have to make a choice about the codec to choose. I'm shooting basically ...
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530 views

What does Ma10p stand for?

i.e. a file is listed as being "1920x1080 HEVC Ma10p FLAC" So....resolution / h.265 video codec / ? / .flac audio codec On its own I'd guess the 10 stands for 10 bit depth, but the Ma is unknown to ...
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116 views

Some H.264 videos that I have seem to have excessive bitrate, is there a way to determine/find their recommended bitrate?

So I have some videos that are Full HD, h264 but they have over 30M bitrate at 30 FPS, they are SDR and their quality is not very impressive so it seems excessive and unnatural for such unimpressive ...
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1answer
292 views

What happens when you use a specific CRF value on a already encoded x264 video?

If there is a h.264 video, and I use -crf 17 I sometimes I get a lower bitrate, but the weird thing is - most of the time get a higher ones. I am trying to get this setting because I think some ...
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1answer
324 views

Maximum YouTube video stream audio bitrate

I know that YouTube no allows 96kHz audio. But I also worry about second thing the bitrate. How much is possible maximum to get from YouTube stream? I'v only found recommended value of 384kbps, but I ...
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110 views

Upscale the key frames while decoding!

I would like to apply some kind of super-resolution (SR) to the keyframes in an H.264 video. The SR process should target the keyframes and upscale them by a factor of 2. For the past few days, I've ...
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1answer
27 views

Surround sound for cinema feature film (Pricing of Dolby Surround)

We are planning to shoot our first feature film with a budget of around 100'000-2'000'000$. And we'd like to master it in 5.1 Surround sound. Normal procedure would be to do it with Dolby Surround, ...
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1answer
226 views

“Opus cuts audio above 20kHz” - Is this normal for lossey audio codecs?

Summary: 1. Is it normal among lossey codecs? 2. what are the effects of this specifically when handling this 'cutoff' audio file? 3. Why is it still saving the file as 48khz if it doesn't contain ...
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1answer
61 views

Do video containers influence the video quality?

https://en.wikipedia.org/wiki/Comparison_of_video_container_formats Understanding containers and codecs I'm just confused because the information above seems to indicate containers are simply chosen ...
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282 views

Best FFmpeg codec for Final Cut import

Is there an ideal FFmpeg codec to use when the video file is designated to be imported into Final Cut Pro X?
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1answer
2k views

Add timecode information to file

I'm writing a program that interprets LTC timestamps from audio channels in video files. The goal is to remove the LTC track and replace it with some kind of native timestamps directly in the video ...
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2answers
1k views

Convert to ProRes with ffmpeg adds unwanted contrast to footage

I'm trying to convert H.264 footage from a Panasonic EVA1 camera to Apple ProRes with ffmpeg. However no matter which setting I use, the output file has slightly more contrast than the original input ...
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189 views

MJPEG Compression

Does a video stream compressed with MJPEG have a less variable output bit rate than others. If I make a little list, start with YUYP420, MJPEG, MPEG2, MPEG4, MPEG4_Part10HEVC(h264), SNOW? Given the ...
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119 views

Is MP4 a valid or common container for ProRes?

Is MP4 a valid or common container for ProRes? I've only seen it in MOVs and MXFs.
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354 views

AviSynth can't open my AVI file: “AVISource: Couldn't locate a decompressor for fourcc dvds”

I simply want to open an AVI file with AviSynth and feed it into VirtualDub. However, when I open my .avs script (consisting of just one AviSource() call), I get the following error: Avisynth open ...
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22 views

Codec for video surveillance assuming non-changing scenes

Are there video codecs, which automatically and effectively compress static scenes? For example, if we have the same room shown at the same light, this codec should produce zero or very low extra ...
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2answers
674 views

Format and codec for a video with 5760×1080

For an art installation I need to project on 3 projectors (1920×1080). My playback setup is: 1 PC with Windows 7, SSD, NVIDIA GeForce GTX 980 and 3 projectors (1920×1080). The video I need to ...

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