17
votes
Merge MP4 with M4A
ffmpeg looks promising. Might be worth a shot.
Specifically, the command
ffmpeg -i video.mp4 -i audio.m4a -acodec copy -vcodec copy output.mp4
should do the trick.
- 271
7
votes
Accepted
What are the benefits of a CLI encoder (e.g. FFmpeg) over GUI Software?
You have 10,000 videos that need to have a logo overlayed, subtitles burned in from srt files, and a standard copyright notice attached to the end. Then you need to make three different versions of ...
- 13.7k
6
votes
Accepted
App to quickly analyze audio loudness of several video files?
ffmpeg, a free multi-platform command-line tool, can do this.
Use the volumedetect and EBUR filters on each of the files
ffmpeg -i input.mov -af volumedetect,ebur128 -f null - 2> input.log
This ...
- 32.6k
6
votes
Accepted
Finding the place where a video loops
Try
ffmpeg -i video.mp4 -filter_complex
"[0]trim=start_frame=0:end_frame=1[c];[c][0]blend=all_mode=difference,blackframe" -f null -
As long as the very first frame of the video is not something like ...
- 32.6k
5
votes
Good open source Video Editors?
If you are really adventurous why not give Blender a go? It is a 3D animation and compositing/tracking application. It is completely free and open (FLOSS) as well as being totally system agnostic. Run ...
- 411
5
votes
Accepted
Creating a one-off non-pro video to document a project - what software would be sensible?
This question gets asked quite frequently, and normally the answer is to pick one from this list. But since you very clearly defined what you are looking for in the editing software, I think I can ...
- 5,412
4
votes
What software is used in Hollywood for special effects and video editing
For video editing the Hollywood standard is AVID, however smaller production houses and indie filmmakers tend to use Adobe Premiere. The nice thing about Premiere, in your case, is that it dynamic ...
- 799
4
votes
how to burn full hd movies (1080px720p) in DVD
DVD Video is limited to Standard Def, not High Def (HD). Blu-Ray overcomes that limitation. Alternatively you can use the DVD as a filesystem and play arbitrary media using a computer. But as a ...
- 4,730
4
votes
About Video Formats and prevention of download of videos
If you don't want your stuff to be stolen, don't put it on the internet
People need to be able to watch your video on their computers. For that purpose, it needs to be downloaded to their computers. ...
- 5,412
4
votes
Creating a video from a text and an audio file
The Amara website offers a free service that accepts audio and text files, synchronizes them, and lets you download a .srt file (synchronized SubTitle). Source of suggestion: Photography TutsPlus.
...
- 847
3
votes
VLC Alternative for fine review media with possibly frames control and detailed codec informations
I haven't used VLC as my primary player since 2007. I switched over initially to KMPlayer and then Potplayer. Potplayer allows fairly flexible splitter and codec assignment for decoding. It also ...
- 32.6k
3
votes
Windows - Easy to use video editor
If you want to save time and learning efforts, and you can live with limited control over the end result, you may want to have a look at:
muvee Reveal
Magix Fastcut
GoPro Studio
Sony Action Cam Movie ...
- 614
3
votes
How do I turn audio into video (that is, show the waveforms in a video)?
After reading the great answer from LordNeckbeard I went on created a small script to make a visualization with ffmpeg and the showspectrum filter.
I also added an upload option for myself to encode ...
- 31
3
votes
Accepted
Which measurements can I take using which programs to exploit the already low quality and save as much space as possible?
There are a few video quality metrics available for you to use, primarily SSIM and also PSNR. You can use ffmpeg to convert the video and then compare the output.
Step 1 Convert the video
ffmpeg -i ...
- 32.6k
3
votes
Accepted
Converting a Video from 1600*1200 to 1920*1080
Using ffmpeg,
ffmpeg -i input.mp4 -vf "scale=1920:1080:flags=lanczos,setsar=1" output.mp4
This will stretch the video to 1920x1080.
ffmpeg -i input.mp4 -vf "scale=-1:1080:flags=lanczos,setsar=1,pad=...
- 32.6k
3
votes
Best software for homemade YouTube videos
A great choice that works on both Mac and PC is DaVinci Resolve. The Lite version is free, and if you use only the basic features, it is very intuitive and easy to learn, from drag-and-drop media to ...
- 4,730
3
votes
Accepted
How do you dramatically reduce the size of a video while keeping the quality as much as possible?
I'm not familiar with handbrake, but this is basically a math problem.
First, you have to decide on a codec. One of the 'best' codecs in regards to quality/filesize-ratio as well as device-...
- 5,412
3
votes
Software used for Film Colourization
From the youtube video description you linked:
The in-house developed and customized cutting edge software tools
provide better image quality and colors very close to the original.
- 19.3k
3
votes
Software that captures and compresses simultaneously
Most consumer video recording software I know compresses on capture. Mpeg and others can be configured for lower quality if you want greater compression, but unless you are recording a plain black ...
- 2,317
3
votes
SDR to HDR (High Dynamic Range) Converter?
I'd suspect anything purely automated is going to be pretty marginal. There's a lot of complexity to getting a good curve with the right gamma, but there's a variety of possible levels of what would ...
- 19.3k
3
votes
Accepted
Export multiple clips from one video as separate files
I did it with shotcut. Credit to: https://forum.shotcut.org/t/export-one-track/7503/3
Steps
Load video into shotcut
click+drag video down to timeline
move playhead to desired position & Split at ...
- 141
3
votes
Is it illegal for me to download DaVinci Resolve 17 just because I don't work for a company?
Yes, it’s ok*, as long as you’re downloading the free version (not the one that says “Studio”) of Resolve and not trying to circumvent their copyright protection. When you download the software, they ...
- 4,444
3
votes
Accepted
Convert Warped VR Video to Stereo
If the original “VR video” is not stereoscopic (i.e., monoscopic panorama) and/or does not contain any depth data, then to create stereoscopic video, the second camera angle must be synthesized from ...
- 4,444
2
votes
Professional text animation software
I would personally use After Effects, but that's because it's what I have/know. If you don't want to take the purple pill (it's a questionable life decision, let's face it) there's heaps of other ...
- 13.7k
2
votes
Good open source Video Editors?
Better than mearly good is AviSynth: http://avisynth.nl/index.php/Main_Page .
Basically you write a Script and then open the Script in a Player. The Script can change the input in many ways and there ...
- 847
2
votes
Are there any good video editing programs with a command line interface?
I created a cross-platform Node.js based CLI tool for making simple video edits. It is more opinionated and limited than mlt, but it aims to have lots of easy to use components and transitions, and ...
- 121
2
votes
Accepted
software for frame images to video with changing framerate?
This is a really late response but I just stumbled onto the question.
The software you're looking for is Adobe After Effects.
Inside After Effects, you'll end up using the effect called "Time ...
- 36
2
votes
Merge MP4 with M4A
If your output container can handle the relevant codecs, then you can simply copy both audio and video streams using ffmpeg:
ffmpeg -i video.mp4 -i audio.m4a -c copy output.mp4
- 31
2
votes
What is good software for camera recording under Linux?
OBS (Open Broadcaster Software) is multi-platform (OBS is widely used in video game streaming). I haven't tried it yet myself for multiple cameras, but I know it supports at least one (as many ...
- 21
2
votes
Auto upload (ftp) video file once it's finished encoding
Maybe someone will chime in with an app suggestion that directly fulfills your need, but here's a temporary workaround - a bit convoluted, but should work.
Create two folders A and B.
Set folder A as ...
- 32.6k
Only top scored, non community-wiki answers of a minimum length are eligible