Questions about video editing, streaming, conversion, capturing or video output. Use a more specific tag if possible.

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7 views

How to cut unwanted video parts and join the rest ones into one video using FFmpeg?

I have read about cutting and splicing using concat but this is not enough for me. I would like to cut marked video parts and join into single video file without re-encoding. Is it possible to cut ...
0
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0answers
8 views

High-resolution channels are permanently shown as zoomed in (iClass 9595x PVR)

My question is a completely general one, regardless of any particular channels or countries or satellites. My rather old satellite receiver (iClass 9595x PVR) shows the full frame scope [every single ...
0
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1answer
11 views

ffmpeg - define exact time distance for images

I have a movie that is 3 minutes long and 29 image/sec. I want to split it into images by 1/second. I use this command: ffmpeg.exe -i FILE0014.MOV -r 2 -f image2 -vcodec mjpeg -qscale 2 "%%05d.jpg" ...
0
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0answers
10 views

Repair missing keyframes in downloaded video stream

I downloaded a video using ffmpeg with the following characteristics: Input #0, mpegts, from 'video.ts': Duration: 00:27:59.76, start: 1.400000, bitrate: 714 kb/s Program 1 Metadata: ...
0
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0answers
14 views

Find video duration after applying slow motion

I'm trying to have apply slow motion effect to a series of videos. And further those videos will be scaled, padded and cross-faded. Following is the command I'm using to apply slow motion. ffmpeg -i ...
0
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0answers
4 views

avisynth - video framerate doesn't match (AssumeFPS - ChangeFPS)

I am trying to speed up only certain frames in a video without splitting it into several parts, here is the code that I used to do this AVISource("C:\Users\me\Desktop\source_10FPS.avi") # get the ...
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0answers
16 views

How to control multiple instances of vlc media player

I want to play just two video files at once. I have enabled it in VLC Media Player. I need to know what to do if I want to pause/play these two instances at once. I have read about scripts, but I ...
0
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0answers
30 views

Why does delaying audio in avi makes no sense?

I have an avi video which seem to have an audio delay of about 5.5 seconds. Therefore I used avconv to correct for this delay: avconv -i myfile.avi -itsoffset 5.5 -i myfile.avi -map 0:1 -map 1:0 ...
0
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0answers
22 views

How to fix a .mov file in hex editor from Photo Booth crash on OS X?

I was recording a ~4GB video using Photo Booth on OS X. The program terminated for some reason (unsure of whether it was computer sleep or something else). I have a corrupted file of about 4GB in ...
1
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0answers
21 views

How to fix video and audio out-of-sync (sometimes)?

I have a avi video file which plays perfectly on Linux (using e.g. mplayer) and on one TV, but when using another TV the audio happens to be out-of-sync with the video by about 5 seconds! This does ...
1
vote
1answer
30 views

How do I force GRUB to keep video mode after switching to the OS?

I use GRUB as a bootloader for my custom OS. I want it to enter graphics mode for me so I don’t have to do it myself in my system. However, before GRUB passes the control to the OS, video mode is ...
0
votes
1answer
11 views

Every video starts with black and messy screen in a while

When I start a video on my laptop it is messy in the first 4-5 seconds. It does not depend on where I play it, everywhere I get the same problem. The problem looks like this: I have a Toshiba ...
1
vote
1answer
41 views

Upscaling video with different filter on each side

I need scale up video from one DOS game using FFmpeg. But with Nearest-neighbor interpolation on left side and xBR filter on the other one. Input (320x200) Output (1280x800) Here is a command, ...
0
votes
0answers
20 views

ffmpeg, how to add new audio (mixing) in video [duplicate]

I want to add an audio file in video. The resultant video contain both the audios, first contain by video it self and second from audio file. Basically mix both the audios. Final video have two ...
0
votes
1answer
19 views

Muxing Audio Over Video Using Ffmpeg

So i have been through lots of tests and i still cannot seem to get audio to mux over video using ffmpeg and cannot figure where i am going wrong so would really appreciate some help. I have this ...
0
votes
0answers
17 views

The proper bit rate for a web cam? [closed]

I have a web cam which streams out h.264 video streams and it comes with a software on the PC to record that video stream. I need a continuous video streams instead of snap shots. I can also set the ...
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votes
0answers
15 views

Video Recording Software for windows8 that works with ezap capture device. [closed]

I have recently purchased a ezcap video capture device to record video games. However I keep getting ShowBiz to crash on me when i switch it to read the capture device, so i've decided to test out ...
0
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0answers
18 views

How do I correct a video that is partially out of sync with its audio?

I recently recorded an MP4 video in which the audio is in sync for the first couple of minutes, but then abruptly falls out of sync for the remainder of the video. How can I fix the out-of-sync audio ...
0
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0answers
13 views

How can I batch convert all of my video files to AAC audio without converting the video?

I've used XMedia Recode to do this and it works great. I set video to "copy", audio to "convert", and it takes 2 minutes for a 2GB file. There's two problems with it for batch work though. It doesn't ...
3
votes
1answer
49 views

youtube-dl : Downloading a youtube user's complete video collection

Previously, whenever I had to download a user's complete videos, I'd just use something like: youtube-dl -ciw ytuser:LinusTechTips But now this does not seem to work anymore. When I issue this ...
0
votes
1answer
20 views

Batch convert video files for upload to Flickr

I have hundreds of home video files in various formats (AVI, MP4, MOV, etc) in sub-folders in a \My Photos folder on my Windows 7 PC. I would like to upload all of these to my Flickr account. But ...
1
vote
0answers
18 views

What techniques can I use for audio and/or video chat that don't use SIP and complex layered architectures?

Point A few years ago a friend and I were messing around and we created a super-simple video chat link by running VLC twice on both our computers: one "watched" the local webcam and cloned the video ...
0
votes
1answer
32 views

Play mp4 video in Internet Explorer 11 with security level set to high

I am using the html5 tag to embed mp4 videos on a site. They play well in all browsers except on IE-11 but only when the security level is set to high (if security level downgrade to medium video ...
2
votes
1answer
37 views

FFMPEG filter to boxblur and greyscale a video using alpha mask

Can someone show me how to enhance the example found here: FFmpeg - Apply blur over face To do the following: Use an input alpha mask PNG instead of a declared rectangular region both blur and ...
0
votes
0answers
12 views

Blur or hide screen portion during realtime presentation

I am about to present my project tomorrow. Demonstrating the project involves showing account name to certain game, as my project manipulates that games launcher. Basically, I am about to present what ...
6
votes
2answers
368 views

YouTube videos black, only audio in Firefox

When I play a YouTube video on my computer, it seems to play fine, but the whole video is black. This happens only when I play the video in Firefox. I'm using Windows 8.1 What I did so far: ...
1
vote
2answers
28 views

ffmpeg wants to overwrite existing images

I want to make a timelapse movie with ffmpeg. For now I use mencoder with following command: mencoder mf://*.jpg -mf fps=12 -nosound -noskip -ovc copy -o Zeitraffer$begin.avi I'm trying to make a ...
1
vote
1answer
63 views

What do I need for VLC to play mp4 video?

I'm trying to set up a Raspberry Pi as a media box that can stream from torrents using Peerflix. To test, I've set up a local tracker and one torrent containing an mp4 video. Peerflix is working ...
2
votes
0answers
21 views

Any empirical length limits or caveats about MP4's of 7400 seconds?

I was investigating a curious issue I have with the playback of certain MP4 files on my BluRay player; in particular, it seemed files over two hours simply would not play (player locked up). As I ...
0
votes
1answer
39 views

Skip parts of video while converting it to images with ffmpeg

I use this command on ffmpeg to convert a video into images: ffmpeg -i video.mp4 -q:v 1 -r 1 -f image2 frame-03d%.jpg What I want to do is to skip the first x seconds and the last y seconds of the ...
1
vote
1answer
41 views

Problems with joining videos in FFmpeg with a cross-fade effect (buffer queue overflow, frames dropped)

I can successfully join a couple of videos into one (using this method) with a nice cross-fade effect in between, but the output video contains no audio. I'm using the -filter_complex command. I've ...
0
votes
0answers
12 views

Video Codec Problems

I have been having a problem with a file with the PRDY and undf video codecs. Is there any way to open them? thanks Brett 2010 iMac VLC version 2.2.1
1
vote
0answers
28 views

FFmpeg - Seek to pkt_pos?

I know that FFmpeg can start seek in terms of PTS/DTS, and that there is a limitation regarding seeking in frame number, but is there a way to seek in terms of pkt_pos? I'd also like to be able to ...
0
votes
0answers
14 views

Issues streaming movies with VLC from my debian server

I am trying to stream movies from my linux server that I connect to via SSH. I go to VLC and networking and I use SFTP to get to my server and my file. ...
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0answers
28 views

How to convert video audio codec with ffmpeg

I am trying this command but it fails I need to convert audio track of 17gb movie file with fastest way So i only need to convert audio and leave video file alone Here the command But it fails It ...
0
votes
1answer
34 views

FFmpeg – Keep original video orientation

I'm converting 3gp video to mp4 format and that is working. But I have one issue: original video orientation is not kept. I know about rotate, flip and other commands, but I'm converting video ...
0
votes
0answers
44 views

FFmpeg - Transcode video and keep original EXIF metadata in the transcoded file?

I am trying to transcode a video from a .mov (recorded with the iPhone) and add the original metadata (EXIF) to transcoded file, how can I achieve that? The original video contains EXIF metadata, etc. ...
0
votes
0answers
21 views

Enabling fullscreen on videos goes to secondary monitor

For some reason when I try to go fullscreen while watching videos (HTML5 and Flash), it always initially goes fullscreen on my secondary monitor. When I undo the fullscreen and move the monitor back ...
0
votes
1answer
37 views

How to preselect audio tracks in VLC when the language name is not in the track name?

I have a number of videos that have been provided to me in multiple languages. Unfortunately the first track is in Spanish and the second track is in English. These audio tracks simply named Track 1 ...
0
votes
1answer
2k views

YouTube video turns black after few seconds

I am trying to watch YouTube videos, but after a few seconds the video area turns black even though it keeps on playing. Any tips why? I use latest Chrome on Windows 7, and a Lenovo Thinkpad.
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votes
1answer
69 views

Analyzing h264 100GB video stream

I have a big file, an h264 stream video of a CCTV. I analyze this file with ffprobe and the result is this: [h264 @ 0000000002d24480] no frame! [h264 @ 0000000002d24480] non-existing PPS 0 referenced ...
1
vote
1answer
59 views

What specs should I consider for playing/streaming 4K to 8K video perfectly? [closed]

I am buying a massive, 4K screen, and might consider one closer to 8K instead. Since these screens are very capable of rendering the full brink of every pixel sent to it by a powerful GPU, what specs, ...
1
vote
1answer
33 views

Segmenting video to X seconds parts with ffmpeg

I have one video with duration of one minute and 35 seconds. I am able to split it into multiple 30 second segments (I am fully aware of other ways to split a video but chose this for a particular ...
0
votes
0answers
13 views

MPlayer Extended rev. 15 won't play some video_ts files under OS X

My MPlayer Extended rev. 15 won't play some video_ts files under OS X. I put in one DVD which played fine when I opened the video_ts file, but it isn't working for any of my other dvds. I open the ...
0
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0answers
13 views

avconv: remove audio stream, keep sync [migrated]

I have an AVI file with one video and three audio streams. I would like to discard two of the audio streams, keeping only one. I tried to do so using avconv (v11.3-6): avconv -i in.avi -map 0:0 -map ...
0
votes
1answer
26 views

How to play an original dvd (.vob file) in VLC?

When I play an original DVD in VLC, it does not play properly. i.e. it sticks too much, while on the other hand it plays smoothly in Windows Media Player (though it doesn't allow seeking). The video ...
0
votes
1answer
58 views

ffmpeg changes audio bitrate when transcoding from MKV to FLV

I have one file - sample.mkv ========================================================= File: sample.mkv Width: 854 pixels Height: 480 pixels Aspect ...
1
vote
0answers
38 views

How do I play video that can speed up, slow down, & play backwards?

I have the problem of needing to play a video while being able to arbitrarily increase or decrease the playback speed, as well as being able to have negative playback speeds (watching the video ...
0
votes
0answers
13 views

Video shows a short length but contains a hour of content based on the file size. Can FFMPEG see past the error?

I have a 3 hour file that I shot... the file size is consistent with that length (100 gigs)... but when i play the file it only plays the first 12 min. VLC player says the file is 3 hours but only ...
0
votes
0answers
42 views

FFMPEG / libx264: How to specify a variable frame rate but with a maximum?

Instead of providing a fixed frame rate to FFMPEG/libx264 (-r/-framerate), I would like to specify a variable frame rate with a MAXIMUM value, and allow libx264 to down the frame rate as it sees fit. ...