All Questions
64
questions
1
vote
0
answers
844
views
How to play two videos side-by-side synchronously when they have different length?
Before going into the question, let's review what we have gotten on "How to play multiple videos side-by-side synchronized?".
But the answer there supposed that the video files themselves were ...
- 173
21
votes
6
answers
91k
views
Replace audio + sync + save all to a new video file – VLC
I have a video with audio. I have an .mp3 file of the same video but in another language. I need to do two things.
Replace the built-in audio with the new audio.
Because the new audio is not exactly ...
- 317
4
votes
1
answer
11k
views
FFmpeg and HLS multiple audio renditions
I'm trying to use FFmpeg to produce an HLS playlist which contains multiple audio renditions, but I cannot get the audio & video tracks to sync together. Here is the scenario:
Suppose I have 2 ...
0
votes
1
answer
317
views
How to sync video (with dropped frames) with its separately recorded audio?
Video where frames get dropped:
procvid.StartInfo.Arguments = "-rtbufsize 1500M -f image2pipe -r 25 -i pipe:.bmp -vcodec libx264 -r 25 C:\\onlyvideo.avi"
Audio is recorded simultaneously with video:
...
- 3
1
vote
1
answer
1k
views
ffmpeg: .ogv to .mp4 - audio video not synchronized
I have a video in .ogv and want to convert it to .mp4 so I can upload it to youtube.
I am trying ffmpeg for it:
ffmpeg -i *.ogv -acodec libmp3lame -vcodec libx264 -crf 18 Windup-demo.mp4
After ...
- 752
5
votes
4
answers
35k
views
FFMPEG audio out of sync when transcoding (demuxing) from DV
I've been stuck with this problem for months. I have over 50 DV tapes (from and old Sony camcorder) to be converted to a more modern, usable format (most likely H264). I've started off with pulling ...
- 89
1
vote
1
answer
964
views
VirtualDub AVI Capture: Video delayed by ~ 4 seconds
I am using VirtualDub 1.10.4 to capture audio and video from video-only DirectShow device:
[dshow @ 0000018baeadb920] DirectShow video device options (from video devices)
[dshow @ 0000018baeadb920] ...
- 537
1
vote
2
answers
1k
views
Is it possible to view a movie in 2 locations at once?
Is it possible to view a movie at the same time using my phone, while it's playing on my laptop? If possible, vlc would be my first choice, but I could use other players as well.
EDIT: to make it a ...
- 438
1
vote
0
answers
733
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 ...
- 452
2
votes
1
answer
2k
views
How can I get exact delay between audio and video with ffmpeg?
I know how to set a delay with ffmpeg's -itsoffset flag, but I want to know how to get and set exact delay time.
- 23
0
votes
1
answer
746
views
Are there really audio-video sync issues when playing Blu-ray movies on a pc?
I would like to buy a Blu-ray player for my next PC; it would be an internal one that I would then use with a software like PowerDVD. My monitor will be a Dell U2415, with a 16:10 aspect ratio and ...
0
votes
2
answers
96
views
How do I automatically sync all videos I record with my android phone to my desktop?
I record a lot of short videos with my Android phone, and I would like to know the most convenient way to keep them synced with a folder in my desktop (OSX). I automatically sync my media from my ...
- 157
0
votes
1
answer
268
views
Sync two movies, frame-accurate?
Given video recordings made on two (or more) cameras such as gopros or keychain cameras, and given a "clapperboard" event in each recording, what is a simple way to trim each recording to start with ...
- 2,521
2
votes
0
answers
2k
views
ffmpeg - complex filter putting 2 videos side by side results in audio out of sync
We have 2 videos. One is a professionally produced video by an artist that performs a song stopping in certain parts to let the user sing. The second video is a stream that is recorded while the user ...
- 21
1
vote
2
answers
10k
views
How to sync two looping videos with mplayer and upd?
I am trying to sync two instances of mplayer with -upd-master and -udp-slave, and notice that the slave staggers for about a second when the master begins the loop anew.
I am running debian 7.1 with ...
- 383