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Abbreviation for synchronization

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Generate Slide show with images and audio file with beeps

I have pictures and an audio file which contains beeps when the picture change should take place. How can I automatically create a slide show, preferably with Premiere Pro?
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15 views

Encoding a MOV to MP4 with FFMPEG (pcm_s24le & h264 to acc & h264) results in different durations (due to audio priming?)

While encoding a QuickTime MOV file to MP4 where the original file has h264 video encoding and pcm_s24le audio decoding and the target has h264 video encoding and aac audio decoding results with ...
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43 views

project 3 separate videos synchronized

For an art installation I need to set up a synchronized projection of 3 separate videos: hardware 1 PC with Windows 7 NVIDIA GeForce GTX 980 with 4 simultaneous outputs 3 projectors 1920 x 1080 (I ...
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15 views

Audio/video sync software for Linux (preferably open source)

I'm looking for a program that can synchronize audio and video from separate files. PluralEyes does this. I'm looking for something that runs on Linux and preferably is open source. I imagine a CLI ...
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2answers
493 views

Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly

I am using below command to push the video to Wowza server, since we are pushing raw h264 video, the rtp packet doesnot have the timestamp, and we could observe audio video sync issue while playing ...
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1answer
19 views

How long should video clips be to be in sync with a 90 BPM song?

I am making a home vacation video set to music. The song I selected has a BPM of 90. I want the video clips to match the beat, so for example, every time you hear the beat a new video clip begins. ...
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61 views

Is there a container format in ffmpeg that supports non-monotonous timestamps?

I have recorded over-the-air digital TV broadcasts from my own antenna. Due to reception blips, the MPEG-TS file can have corrupted packets, and thus corrupted timestamps, in the middle of a ...
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1answer
32 views

SDI loop through with LTC embedder

I was wondering if there’s a converter out there that would take a HD-SDI in, as well as a LTC in, and an SDI out. We currently have video feeds with no timecode embedded and was trying to loop ...
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9 views

recording and later synching both screen and speaker

My goal is to create educational videos that show a recording of my screen/mouse, and also show a small inset view in the corner of me speaking. My plan is: Record the screen using a standard screen ...
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20 views

Fix a non constant desync?

I'm facing weird desync problems concerning two video inputs that are supposedly parallel. The 1st input is a screen capture of an emulation. 2nd input is a video generated by the same emulator, but ...
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10 views

Synchronize Video / Audio with different numbers of audio channels

I have a main video recording and audio recordings from 2 phone-based lav mic's. One subject's lav recording has 2 audio channels and the other has 1. (The video also has 1 audio channel) I can ...
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15 views

Adobe premiere pro cc lip sync - gets displaced overtime

I have a video recorded from camera, and the sound recorded from a good microphone separately. So I have a video file and an audio file in my project. I mannually synced the clean audio to the video, ...
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1answer
519 views

Remove flickering due to artificial light with ffmpeg

I have video footage shot at shutter speeds of 1/30s under artificial light here in Europe where the AC is 50Hz. Flicker occurs -- obviously I should have used 1/25s or 1/50s but I didn't, and want to ...
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1answer
512 views

OBS Studio: desktop audio falls out of sync

I have an interesting problem: When I stream to Twitch (or record), my desktop audio goes out of sync with the video over time. The microphone is perfectly synced the whole time. Both OBS Studio and "...
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1answer
495 views

Syncing Multiple Audio Streams With One Video Stream (FFMPEG)

I'll try and keep this as simple as possible, and thanks for any help. I have two PC's one that I'm gaming on, one that I'm recording on. I also have two RME audio cards (one in each respective PC) ...
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1answer
56 views

Subtitles do not match spoken dialogue. Why?

I have been watching a lot of shows on Netflix lately in French, (please note the original language is English, so it is dubbed) with French subtitles. I find that the subtitles rarely match what is ...
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1answer
354 views

ffprobe/ffplay/ffmpeg command for checking audio/video sync

I'm working on a script that live streams 3 hours of video to several servers. Is there a command (or tool... maybe using something else like wireshark?) that I could run on each of the streams to ...
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30 views

Problems syncing audio from Protools with 60fps in Premiere Pro CC 2017

Help! I don't know what to do. I'm trying to sync an audio track recorded on Protools 10 with a video shot on a Nikon D810 at 60fps. Usually I have no problems since we record using a metronome, so ...
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318 views

How can I mux video and audio from separate sources that're at different frame rates?

I'm having trouble muxing the video from one source with the audio from another because the audio drifts over time. As I mentioned in the title, the sources are at different frame rates, the video's ...
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1answer
163 views

Imported video getting out-of-sync audio in Adobe Premiere

I have an MKV video with a few out-of-sync points caused, probably, by a 3rd-party program, used to remove some commercials from it directly from the MKV. So watched the video several times in VLC ...
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0answers
119 views

Is there command line software that syncs two audio tracks

I have a bunch of separately recorded audio and video tracks that I need to sync. By sync (synch?) I mean align the two tracks so that the audio matches as closely as possible. The two tracks are ...
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3answers
55 views

5 channel video installation

For my graduation project (a spatial documentary installation), I need to find a system to play 5 different video's simultaniously, all connected to a projector. So I have 5 projectors and 5 seperate ...
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441 views

ffmpeg won't sync audio after specifying rate

There are a thousand threads on audio sync problems but none of them had the solution for my case. I am recording videos on frame arrival as opposed to specifying a fixed rate. As a result I may get ...
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1answer
68 views

Audio without video is OK, but WITH video it is delayed

I have this audio filterchain (for repetitive short part of the original audio): [1:a] atrim=start=2.52:end=1:38.0, aloop=100:7700 [audio] When I used it without video, i. e. in the ffmpeg command I ...
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21 views

Synchronizing audio to video on a low-end notebook

is there any video software that will allow me to to synchronize externally recorded audio to video on a low-end computer? I do not plan on doing anything besides audio synchronization. I know there ...
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37 views

How to fix virtualdubs audio resync pitch shift?

So, I recorded three camera angles yesterday for the first time with three instances of virtualdub. I didn't notice that there were some frames dropped until after about 2 hours of video were shot. My ...
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4answers
610 views

Syncing audio and video from different sources

We recorded a video of a talk and its audio on separate devices (camcorder and phone). Both are relatively new an the camera indeed does nice full HD video. My problem is that they both seem out of ...
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32 views

How to burn a MKV to a DVD without audio sync issues using only open software

Using only open software, preferably something cross platform, I'd like to convert an MKV file I have for playback on a DVD on a standard player. I've used software to do this before, but I keep ...
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1answer
34 views

Is it possible to capture video signal waveform as audio for video replay?

I am an electronic musician. For artistic purposes, I want to be able to record a video signal to a .wav file and replay that signal into a TV as video. It seems like it should be simple--if I ...
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1answer
3k views

ffmpeg concat introduces a/v sync problem

I have one 2-hour video file and want to add a 10-second title sequence to its start. The long file has perfect a/v sync from start to finish. However, when I use ffmpeg -f concat -i mylist.txt -c ...
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1answer
178 views

Resynchronizing audio in a variable framerate video with missing timing data

I was recording a moderately long (20-30 minute) video when suddenly my camera died, resulting in a corrupt file. I was able to repair the file by following the steps in How to open and repair an m4v ...
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410 views

Audio goes a frame or two out of sync after export premier pro

i've finished my film and i'm trying to export my film in 1080p 23.976 fps , using h.264 audio acc 44.100 khz and 192 bit rate . when i export my full film my audio is slightly out of sync/time with ...
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1answer
64 views

Rolling shutter strobe pattern

I'm trying to implement a vision-based "lidar" system as described here: https://hackaday.com/2016/04/04/smartphone-and-ir-line-laser-measure-distance/ the idea is to capture video at 30fps and pulse ...
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4answers
594 views

Sync several movie clips with one audio file

Have several video clips from DSLR with terrible sound, and one audio file from zoom. It was a bend concert. Zoom was recording all the time but clips are separated, as there were breaks from song to ...
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2answers
381 views

How is 29.97 timecode generated over a full day without frame errors?

A quick primer:American television was originally broadcast at 30 frames per second. In order to accommodate color information without losing backward-compatibility with B&W televisions, the ...
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660 views

Audio drift after uploading to YouTube?

I recorded myself playing some games and then uploaded the videos to youtube. I noticed that after youtube finished all processing and made multiple resolutions available that the audio and video ...
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1answer
339 views

how to synchronize text to the video timecode?

I am wondering how to add text which is updated along the time code of the video. Concretely, I have a gopro footage and a file of some performances values (speed, heart rate, cadence,...) that I ...
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75 views

Video and Telemetrics not in sync

I've recorded a video with Raspberry Pis Camera Module. On top of that I've recorded GPS data including the GPS Timestamp and made my own data file. Using Dashware I've tried to get the video and ...
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3answers
86 views

Is 0.0036% time inaccuracy on a consumer-grade camcorder expected?

I did an experiment on our church's camcorder (Sony Handycam HDR-CX380) recently to test whether it was the source of a time inaccuracy between our video recordings and PC audio recordings of sermons (...
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1answer
114 views

Identifying source of audio drift between camcorder and recording PC

I'm recording our church's sermons using a standard consumer-grade camcorder (Handycam HDR-CX380). Depending on mixer circumstances (our church moves around a lot), I'll either run a line from our ...
2
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1answer
41 views

Why is my Sony Alpha 6000 not synchronzing with other recorders?

Using a Canon 70D and a couple stand-alone audio recorders, I have no trouble matching footage between the different devices. With the Sony Alpha 6000, I can't line them up on the Premiere timeline: ...
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1answer
536 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 / ...
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2answers
620 views

What is the best way to plan and sync voiceover?

I'm working on an informational video which has some live action product shots, animation created in flash, a backgroud music track, and a voiceover track. I've got total control over everything so I ...
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5answers
21k views

Losing audio/video sync in Adobe Premiere with mp4's

I have two videos to combine in Adobe Premiere. They play okay in a video player, but putting them into Adobe Premiere CS6 suddenly makes the audio unsynced with the video (even in the Source Monitor)....
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1answer
878 views

ffmpeg concatenation introduces video stutter but does not affect audio

I've gone through several different variants of this process and it always causes me problems. I've gotten it working sometimes but it doesn't seem to be consistent. I have a video camera which ...
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1answer
113 views

Recording video's with two cameras?

I have started to make some videos and I want to add a second camera to get a different angle. The main camera I have is a Nikon D7200. I am looking at a secondary camera, but I am hesitant because ...
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2answers
67 views

Premiere CC 2015 and DVD conversion audio sync issue

Years ago, I transferred a video tape of a live band performance to DVD (using a Sony VHS/DVD RW machine that I no longer own). Yesterday, I edited an 8-minute clip from the DVD. The audio/video sync ...
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1answer
828 views

How to sync the dubbed audio to original video?

I have English movie Die hard in English having total length for example 1hour 30minute original time and dubbed movie length 1hour 28minute.how to equalize both audio.apparently it is impossible. how ...
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1answer
169 views

How to sync motion and music in After Effects

There's a video of a man, drawing something. There's a violin symphony music. I want to sync the video, I mean the movements of hand with the symphony. For example, I want the hand to move fast, ...
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1answer
133 views

Sync Video to Audio in SonyVegasPro13 with multiple anchors

I have a sample recorded with half speed at 60fps (for better quality later on), which is my video track. Then I seperately recorded the audio track at normal speed. I imported the video track into ...