Questions tagged [codec]
A 'coder-decoder' computer program capable of encoding and/or decoding a digital data stream or signal.
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12 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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0answers
23 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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28 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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1answer
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
20 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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2answers
170 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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1answer
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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2answers
930 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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2answers
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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197 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
31 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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0answers
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
148 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
43 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
106 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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0answers
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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0answers
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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1answer
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
59 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
276 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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0answers
14 views
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
69 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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0answers
4k 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
213 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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2answers
524 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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3answers
115 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
291 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
315 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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109 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
225 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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0answers
279 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?
3
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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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1answer
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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1answer
118 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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1answer
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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0answers
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
672 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 ...
0
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1answer
90 views
What codec do I need for this video file?
I have a video file from my Hikvision NVR which I cannot play on Windows 10 in either VLC or Windows Media Player - all I get is a black video and the seek bar just whizzes along...
I can play this ...
