Hot answers tagged

271

Use the crop filter: ffmpeg -i in.mp4 -filter:v "crop=out_w:out_h:x:y" out.mp4 Where the options are as follows: out_w is the width of the output rectangle out_h is the height of the output rectangle x and y specify the top left corner of the output rectangle Original image Original 320x240 image Example 1 To crop a 80×60 section, starting from ...


44

You can do a simple image overlay using the following syntax: ffmpeg -i input.mp4 -i image.png \ -filter_complex "[0:v][1:v] overlay=25:25:enable='between(t,0,20)'" \ -pix_fmt yuv420p -c:a copy \ output.mp4 overlay=25:25 means we want to position the image 25px to the right and 25px down, originating from the top left corner (0:0). enable='between(t,0,20)'...


13

Kdenlive is rapidly becoming the most advanced Open Source video editor for Linux. As a Windows user, you can download a live CD of Kdenlive. Burn it to a CD, and then it will boot up into a Linux system for you. Or, you could install Virtual Box on Windows (again, free software) and then install the live CD to that. This would allow you to simultaneously ...


10

If you want to Preview Audio you need to use RAM Preview... Press Numpad 0 on the number pad (shortcut key for Ram Preview), then you can hear the audio. Press Numpad 0 on the Numberpad.


9

I found that using Adobe Media Encoder is much easier when just cropping. Add the video to the queue and open the export settings. On the source tab you can crop the video and there you can also enter how many pixels to remove at each side. Remember to set the correct output size in the video tab on the right side. Here is a screenshot showing how i did it:


8

I believe the only answer to that is to take at least a 24hr break. Move onto another project or start something new. The number of times I have come back to something after a decent break and can all of a sudden see what needs to be done is shocking. I don't believe their is a quick fix to this issue.


8

PBS is made up of 354 different broadcasters and carry content from many different studios, it is highly unlikely that they all use one product and chances are good they use a product other than Final Cut or Premiere. Avid makes several very popular products and the software that drives actual broadcast studios isn't the same kind of software used by ...


8

According to Adobe, it's a bug. Until Adobe fixes this bug with an update, the workaround is to switch off GPU acceleration in Project Settings.


7

There is an Linux/Gnome based video editor called PiTiVi which is working close with the GStreamer multimedia framework which is used by most Linux distributions. The PiTiVi project has been slow moving because of their development philosophy which is "upstream first". Challenges they encounter in GStreamer means that they work with GStreamer to solve the ...


7

I personally run Cinelerra CV and it's "mochup" Cinecutie on my Linux boxes. Cinelerra (and it's relatives) can do some very sophisticated editing work, but they aren't the easiest to use. Luckily, there are lots of video tutorials out there to help you.


7

If you have a frame where the person does not exist, you can use a tool called a difference matte. (You'll need to scroll down to the section titled "Difference Matte Effect" for a description.) It will find a difference between the frame without the person, and the frames with a person and remove areas that are the same, leaving only the difference (in this ...


6

After Effects is not designed as an editing platform. Audio preview only works when you do a RAM Preview and pre-render all the frames for the content you are previewing. You never get Audio with the real-time preview. The intent behind RAM Preview is that it lets you check the final quality of the render prior to writing it to disk, but it isn't really ...


6

I would probably approach it by first measuring the size of the area that you want to crop to. This can be done by exporting a frame of the image and cropping in another program (like Photoshop). I would then create a sequence based on the other settings of the video, but alter the resolution of the sequence to be that of the portion of the video you ...


6

I think I've found the easiest way! Just crop the area you want. Go to the Export window without worrying about the black margins showing. Set the final resolution and export settings as you would want. (THIS IS THE IMPORTANT ONE) On the top left of the Export Window, there are two tabs; SOURCE and OUTPUT. Go to the Source Tab. On the left-most side, find ...


6

Yes, this is possible using ffmpeg and the mkv container. An example command sequence would be: ffmpeg -i input1 -i input2 -c copy -map 0 -map 1 output.mkv source Breaking down the command: -i input1 This selects the first input file. Could be something like my video_track1.mov. -i input2 Here you can specify the second input file. You can add another ...


6

Letter box if you have bars on the top and bottom. Pillar box if you have them on the sides. Stretch (or possibly anamorphic, depending on what the intended playback aspect ratio is) if you are full screening it by stretching it out to fill the space. Cropped if you are making it full screen by cutting off the edges.


6

There are methods to generate frames in between frames, mostly giving you mixed results. For one, the plugin "twixtor" (~330$) actually does a somewhat decent job at assuming missing frames, so much so, that a 30fps video can be played back at half the speed, making it look like 60fps slow-mo. On the other hand side, you can sample the frames directly in ...


5

Have you rendered the work area? Unrendered clips can lead to lag in the playback. If you have rendered your clips the bar above your clips in the timeline should light up green instead of red or yellow (see picture below). If the bar isn't green, go to Sequence->Render Entire Work Area. Done!


5

If you're on Linux, consider Cinelerra: the most powerful video editor for Linux, Openshot: simple, powerful, and free video editor for Linux, or Kdenlive (also available for FreeBSD and Mac OSX): Free and open source video editor for GUN/Linux and FreeBSD Openshot and Kdenlive can be installed via apt-get install, however Cinelerra requires a little more ...


5

I tried kdenlive, so I'll post my findings about it as an answer. It didn't quite do the job, so I'm not going to mark this as the accepted solution. kdenlive easily imports my clips in mjpeg+pcm, and flac. And looks like it can export through ffmpeg, which is what I want. It has a feature to "set audio reference", and for other tracks, "align audio to ...


5

Do you realize people go through years of academical studies or expensive courses at private universities to learn all that? It's certainly not something you're going to master by watching a few Youtube videos ... If you want to seriously get into film making, I would suggest you take a course. Not necessarily a full blown film studies degree, but you could ...


5

First off, if you have audio with your video (that you want to replace with your high-quality audio recording), then step #1 is to nudge the Zoom audio track to line up the impulse of the clap with the corresponding impulse of the scratch audio from the video file. To do that, you need to change the Timecode Display Format to Audio Samples. Once you do ...


5

Disclaimer: You didn't specify what program you are working with, so I assume you are using the current version of Premiere Pro. Assembly Workflow Your workflow is a common one for beginners. Back when I gave Premiere Pro introductory courses, I noticed many students start out like this, basically doing the assembly, cutting and arrangement of the footage ...


5

Final Cut Pro X has a plugin called Pro Removal that can remove moving things from the scene on fixed camera shots. Also there is a tutorial for After Effects that shows how remove objects from scene using the tracker. Also you can clean frame by frame using Photoshop or similar if you have a good amount of time to spend or a crew to help you in the task.


5

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 give you a better recommendation. Premiere Elements Personally, I use Creative Cloud software, which means Premiere Pro for video editing and After Effects for ...


4

I recommend the Creative Cow web site, specifically, http://forums.creativecow.net/adobeaftereffects. This will serve your need for getting help on AE, but this is not a site for posting to find some one to do the work for you. Hope this helps.


4

Sorry to say this, but DVD does and will not support HD videos - at least not with menu and other DVD features. HD-DVD didn't survive on the market - Blu-Ray did. The problem is that the amount of data necessary to create a HD image is higher that the bit-rate of DVD-Format. You can save various file formats on a DVD-ROM and some DVD players can play those ...


4

MoviePy looks less intimidating than other scripting languages. It may be easier to script your time tag cutting tool with it. http://zulko.github.io/moviepy/


4

Found it! You can press the "J" key to play in reverse. Each time you hit the "J" it will jump a full speed up to x4. If you want to jump by speeds of .25x, hold the "K" button and hit "J". While it is play backwards, hitting the spacebar will jump you back to where you started playing, and hitting "K" will stop you where you are. To adjust playback speeds ...


4

So after 8 hours of research, trial and error, I found a successful workflow for .mov footage from my Canon EOS Rebel T3i. The first part is that you can't import .mov "Apple / H264" files with Lightworks without purchasing the "Pro" version. The pro version costs $60 per year (which is actually a good price for what you get). So I bought that and was ...


Only top voted, non community-wiki answers of a minimum length are eligible