Unanswered Questions

8
votes
0answers
1k views

Copying h.264 video from TS into MP4 changes frame rate and time

I have large MPEG-TS file that I am converting to MP4 using the below command. If I seek to the same time in the video in both the MP4 and the TS file, the MP4 will be a few frames behind the TS ...
7
votes
0answers
372 views

Is it possible in FFMPEG to change scale over time?

Ok, so using the overlay filter, one can change the x/y location of a video over time by using the "t" variable. For example, overlay=x='if(gte(t,2), -w+(t-2)*20, NAN)':y=0 can be used to start ...
6
votes
0answers
195 views

Converting GIMP curves files to Photoshop (.acv) for ffmpeg

I've seen a number of scripts for converting Photoshop .asv .acv files to a GIMP friendly format. Does anyone know if such a tool exists to do the opposite, i.e. converting a GIMP curve file to .asv ...
5
votes
0answers
137 views

Trying to sync audio in mpeg2 video whose video freezes first 8 seconds in playback

So I have a handful of old mpeg2 (.mpg) files with the following profiles as provided by ffmpeg (the timecodes on each are different): Stream #0:0(eng): Video: mpeg4 (Advanced Simple Profile) (mp4v / ...
5
votes
2answers
284 views

Do any iOS video apps record in log color space?

Is there an app for iPhone or iPad that will let me record log color space video? It seems like with such an abundance of instagram-ish "filter" apps, developers probably have access to raw sensor ...
5
votes
1answer
104 views

Making a Digital clock with a specific time for Sony Vegas Platinum 12

I'm using Vegas Platinum 12 and I want to create a time code in a video. But here is the catch. I want to start the clock at a specific time and have the count start at that time, i.e 05:21:34 or ...
5
votes
1answer
567 views

How to capture DVB-T using a generic RTL2832U USB stick on a mac

Is there a way to capture DVB-T video using a generic USB DVB-T dongle on a mac? I've read many examples of people using VLC on Linux/PCs, but can't see any generic drivers on Mac OSX?
5
votes
2answers
157 views

Linux command-line option to do video lens correction?

Is there a Linux command-line option to do lens correction on videos? (Either as a tool, or a collection of tools) Specifically, GoPro videos? I know I can do correction in GoPro Studio, but I need ...
4
votes
1answer
208 views

Convert fisheye videos to equirectangular videos

My goal is to quickly create equirectangular videos from full-frame fisheye videos with a given hfov. Panoramatools, especially mpremap allow that but it takes long for each single picture. Given that ...
4
votes
1answer
497 views

ffmpeg: overlay rotated video with transparency

I'm new to ffmpeg (video encoding in general). I have two videos one larger than the other. I want to rotate, resize and overlay the shorter video on the larger one at defined coordinates. So far, ...
4
votes
0answers
42 views

Evolving lines with mirror effect

I would like to create evolving lines similar to those in this sequence (starting at 0:28): I know how to reveal lines, but I struggle to make the line moving so ...
4
votes
3answers
116 views

What's the best way to record a skype conversation?

I need to record a skype conversation and upload it to youtube (it's a live conference and the other party asked for it). Can I record a skype conversation? What would be the best way in terms of ...
4
votes
1answer
212 views

Video transitions and filters - how to create custom ones?

I am wondering if there is a possibility to do custom video transitions or filters. Like the video spiraling out, little squares appearing, circling out or something like that. Wiping the video out ...
4
votes
2answers
51 views

beginning of old VHS tape unreachable

I was recently given a 27-year-old VHS tape to transfer. While I'm happy that most of the tape is transferring smoothly (right now), the beginning of the tape is inaccessible. The player's ...
4
votes
2answers
170 views

Video software to add video effects similar to Apple's Photo Booth

Apple Mac OS X includes Photo Booth, an application for taking photos and videos with the built-in camera (if available, of course). Photo Booth can also add effects while taking a picture or video. ...

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