Questions tagged [codec]
A 'coder-decoder' computer program capable of encoding and/or decoding a digital data stream or signal.
211
questions
2
votes
1answer
15k 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 ...
0
votes
0answers
18 views
ffmpeg: Unknown decoder 'copy' when concatenating clips
Basically I was following https://video.stackexchange.com/a/15701/26767, which states:
This should work faster...
ffmpeg -ss 1:00 -t 5 -i in.mkv -ss 2:00 -t 5 -i in.mkv \
-filter_complex "[0][1]...
1
vote
0answers
28 views
Why does audio not work for this mp4 when played on IPad with headphones plugged?
I'm hosting this video : https://itype.techforge.com.au/assets/videos/repeated/WordRat.mp4.
It seems to work fine unless you happen to be on an IPad and plug the headphones in. With the headphones ...
0
votes
1answer
36 views
Hello ffmpeg heroes - please help me with ffmpeg/ffprobe commands to decode a video for me?
I have a sample.mp4 which is currently not playable on VLC or media player and I've checked the FFmpeg values and get the below result? Any help would be greatly appreciated.
0
votes
1answer
17 views
How can I find out the codec of a video I have exported from Premiere Pro?
I've exported some videos from Premiere Pro after working on them, but I've forgotten what the codec of the video is. How can I find out the codec of the video? Thanks!
17
votes
5answers
30k 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
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 "...
1
vote
0answers
22 views
Widely compatible video format with lossless audio
I'm a software developer. My software produces animated video files with music.
The video files should be compatible with a wide range of software, and they should have excellent audio quality. The ...
1
vote
2answers
778 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 ...
29
votes
4answers
41k views
How does YouTube encode my uploads and what codec should I use to upload?
Related to What codecs/formats are appropriate for full motion video recording for youtube? I'm wondering exactly how I can expect Youtube to handle my videos. I know they have a rather zealous ...
1
vote
0answers
68 views
FFmpeg :How to convert to XDCAM HD-422 correctly? (or how to force frame order to BBIBBPBBPBBPBBI like XDCAM HD-422 )
I exported some XDCAM HD-MXF files with Adobe Premiere and Edius,both exported files are the same, I was surprised to see the order of their frames because they are like this : BBIBBPBBPBBPBBI...
But ...
0
votes
1answer
113 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 ...
0
votes
1answer
80 views
Create 4x2 grid mosaic
trying to create a 4x2 grid from 8 videos using the terminal on a mac. The code I am using is not working:
ffmpeg -i input0.mov -i input1.mov -i input2.mov -i input3.mov -i input4.mov -i input5.mov -i ...
0
votes
1answer
212 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 ...
1
vote
1answer
109 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 ...
3
votes
1answer
339 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 ...
1
vote
1answer
29 views
Decrease video size post-editing
I am using a video editing software to edit my videos for YouTube. The scenario is as below:
Input file size: 80mb.
Input type: webm.
My expectation after editing :
Video size: around 100mb.
(Any ...
0
votes
1answer
490 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 -...
0
votes
0answers
8 views
HVEC codec with a .mov extension
Specs for a job I'm working on is HVEC codec with a .mov extension. Media encoder only gives me the option to export HVEC as a .mp4. How do I export or convert to a HVEC with a .mov extension?
0
votes
1answer
57 views
Valid Slideshow-Video created by ffmpeg is not accepted by Twitter
I create a video from a slideshow using ffmpeg. I have a valid video at the end. VLC plays that video, YouTube also. I want to display the final product directly on twitter.
I checked the recommened ...
0
votes
1answer
11 views
Artifact in animation / horizontal lines & double images
I'm using Handbrake, with the H.264 Codec (RF:16). It works pretty well with live action, but it produces odd results whenever I try to back up/encode animations. I've attached a screenshot:
Anything ...
0
votes
0answers
21 views
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 ...
0
votes
2answers
21 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:...
0
votes
0answers
35 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 ...
7
votes
2answers
753 views
Video codec for simple animation?
I am generating an animation in Matlab, composed of simple diagrams. The images are characterized by fine structures, strong contrasts and mostly discrete colors, e.g. there are few-pixels wide black ...
0
votes
0answers
16 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 ...
0
votes
0answers
47 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 (...
0
votes
0answers
124 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 ...
0
votes
1answer
33 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 ...
0
votes
1answer
17 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 ...
1
vote
2answers
367 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 ...
0
votes
1answer
35 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 ...
-1
votes
2answers
3k 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 ...
1
vote
1answer
283 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 ...
0
votes
2answers
20 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 ...
0
votes
0answers
469 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 ...
0
votes
1answer
34 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 ...
1
vote
0answers
33 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 ...
0
votes
1answer
265 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 ...
1
vote
2answers
2k 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 ...
2
votes
1answer
69 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 ...
0
votes
0answers
21 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 ...
1
vote
0answers
15 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 ...
0
votes
1answer
107 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 ...
0
votes
1answer
3k 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 ...
-1
votes
1answer
38 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?
0
votes
1answer
57 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.
0
votes
1answer
93 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 ...
7
votes
2answers
553 views
What video codecs can provide “adaptive quality”?
Background:
I am trying to compress lossless bluray tracks to a more storage friendly size without a huge loss in quality.
What I've been doing thus far:
Exploring compression options with ffmpeg. ...
1
vote
2answers
532 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
...
