Questions tagged [audio]

Audio refers broadly to the information, be it acoustic or electronic, entering, traversing, or exiting some medium.

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31
votes
6answers
36k views

How do I turn audio into video (that is, show the waveforms in a video)?

I have to create a video. Part of it involves "showing" a radio interview. Rather than just having a black screen and listening to the audio, I'd like to have a varying waveform on the screen and a ...
17
votes
3answers
23k views

How to fade in/out a video/audio clip with unknown duration?

I'm working on a project where I'm using ffmpeg to batch convert some video files, and adding fade in/out effects at the head and tail of each clip. I've been using this bit of code to add the fade/...
14
votes
3answers
33k views

Adobe Premiere - Restore Audio to A/V Clip After Deleting

Say I add a bunch of Audio/Video clips to a sequence, then delete all the audio (Alt-select it and delete); I work on it for some time, close Premiere, re-open.. etc., Is there any way to restore the ...
7
votes
9answers
218 views

Places to look for sound tracks for videos

I'm wondering what's a good place to look for background music for our video productions. I'm not asking for a free one, but for any good place with a good categorization of soundtracks and songs for ...
7
votes
3answers
762 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 ...
6
votes
6answers
9k views

What's the benefit of using an external audio recorder compared to an internal one?

Lately, my friends have been prompting me to buy an external audio recorder. They said that the quality of the sound is way better. I have always been using the internal audio recorder of my DSLR. As ...
6
votes
4answers
3k views

Video desyncs with the audio over time

I record footage with OBS and do voiceovers recorded in audacity. I process the audio in audacity, then sync the audio with the video. However, since I started doing it this way, the audio and video ...
6
votes
5answers
772 views

Most-efficient inexpensive way to speed/slow video track to sync with audio track?

My machines are a few Android tablets (not the newest, but not too old either) as well as a Mac running OS X 10.9.5 (not about to upgrade the OS - long and irrelevant story why). Sometimes I do a ...
5
votes
2answers
702 views

Do I need an audio recorder?

I'm just starting out...I'm learning to work with Adobe Premier Pro, and I just bought a Snowball/Blue microphone and am learning to record audios with Adobe Audio. I haven't even bought a video ...
5
votes
3answers
1k views

Transcription Methods/Times

I figured I'd leave a question here while I did the manual labor, but what do you find is the best way to transcribe footage? I'm an editor and the first thing I like to do is create a script of ...
5
votes
2answers
3k views

How do I change the audio on a H.264 MP4 without re-rendering the file?

Is there any way to swap out the audio track on a rendered H.264 MPEG-4 without having to re-render the entire video project? Can this be done with Premiere, MPEG Streamclip, ffmpeg, or some other ...
4
votes
4answers
4k views

ffmpeg: Normalize audio in an avi file

Ι have an avi file that has different levels of audio. Is there a way to decrease and increase appropriately where needed the audio of my file using ffmpeg?
4
votes
3answers
22k views

How to detect and extract words from audio/video stream online in a webpage itself?

I have a video (or audio, I think it is not important) stream/file which does not contain subtitles. But it has clean english speech. Is it possible to detect and extract words from it. I don't need ...
4
votes
3answers
689 views

Effective working at audio/video editing sessions (avoid fatigue making steady progress)

Background I've just completed an editing project to produce video highlights of an awards evening for my local community radio station. It was a voluntary non-paid project and I'm very pleased the ...
4
votes
3answers
1k views

How to make a video from a still image and an audio file?

I have an image file (png) and an audio file (aiff). How do I combine them to make a video file that shows the still image and plays the audio file? Target operating system: either OS X Lion or ...
4
votes
3answers
56 views

How to make a video from a still image and an audio file?

I have an image file (png) and an audio file (aiff). How do I combine them to make a video file that shows the still image and plays the audio file? Target operating system: either OS X Lion or ...
4
votes
2answers
25 views

Transcription Methods/Times

I figured I'd leave a question here while I did the manual labor, but what do you find is the best way to transcribe footage? I'm an editor and the first thing I like to do is create a script of ...
4
votes
5answers
434 views

What equipment should I get for starting out making professional quality films?

I want to start two short film projects but I don't know what equipment I need to get a good professional quality result. I've been saving some money so I hope budget is not a problem. Also, what's ...
4
votes
2answers
103 views

I want to add video noise/grain based on an audio track?

Does anyone know of a plugin that would allow me to add video noise that is based on an audio track ? Anything at all that would let me do this would be fantastic.
4
votes
2answers
75 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 ...
4
votes
1answer
2k views

Will Compression/Format of Audio Change when Uploaded to YouTube?

If I have a .wav audio file, put it in a video file, say a .wmv, as, if I'm not mistaken, that format basically just uses .wav for its audio, and upload said .wmv file to YouTube, will the compression ...
4
votes
2answers
9k views

Premiere Pro doesn't play AC3 audio stream from .MTS file

I have video clips from two cameras. They were recorded in AVCHD, which I've imported as .MTS in Adobe Premiere Pro. The clips taken from one camera works fine. The others don't play audio. I've ...
4
votes
2answers
501 views

Bulk/Mass Edit Video Audio?

I have 100 videos that need editing so that I can level the and amplify the audio track. However I do not want to have to extract the mp3 track from each one and edit it then merge it again with the ...
4
votes
2answers
6k views

Awful Audio in Video post-render (Premiere Pro CC)

I'm trying out Adobe Premiere Pro CC 2014 and I have a video with three audio tracks. The quality of each track is as follows (listed as the "Source Audio Format" in Premiere): 48,000 Hz 16-bit Mono ...
4
votes
1answer
1k views

Recording Audio for Stand-Up Comedy

I have recently come into producing professional recording of stand-up comedy. When it comes to capturing audio, I use two sources. 1) a line directly off the mic to get the performer 2) a mic in ...
4
votes
1answer
808 views

Free software to synchronize audio and video recorded at the same time

So I just filmed something using two webcams and a separate audio recorder. This means I have 3 files, 2 video, 1 audio and they all need to be synced and then I need some sort of software which will ...
4
votes
1answer
747 views

Using ffmpeg to add height (as black bars) to video file without quality loss

I have a file of resolution 3840x1632, but my TV stretches the picture vertically to fill up all 2160 pixels of height. Is it possible to use ffmpeg to add blank / black height, while preserving the ...
3
votes
1answer
4k 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 ...
3
votes
2answers
3k views

How do I remove audio from all files in a directory with ffmpeg?

I have a directory full of short video clips in .AVI format, and I want to remove the audio from all of them. I'm using Ubuntu 12.04. I tried this command: find -name '*.avi' -exec ffmpeg -i {} -an -...
3
votes
1answer
4k views

Loudness control LUFS level adjustments

Is there a tool that can adjust the loudness level of a video? for example I need to make the loudness to be -23 LUFS with max deviation of 0.5 lu. is there a simple tool/cloud service that doesn't ...
3
votes
2answers
2k views

What is KeyInt and min-keyint and no-scenecut

I am absolutely new to video processing, I am building a video streaming site and worked with ffmpeg to generate the formats I need for ShakaPackager. Sadly I don't understand some of the options ...
3
votes
3answers
149 views

I want to add some audio to the end of a video

I have just created a simple AVI video that contains a small powerpoint slide as an opener, then it does into a timed installation of some software. I have managed to copy and paste the final frame so ...
3
votes
1answer
855 views

How to modify audio level of video according to replaygain info?

I have a bunch of music videos I have downloaded from youtube. I usually put them in a playlist in mpc (Media Player Classic). The problem is that the audio levels of the videos are quite different ...
3
votes
2answers
1k views

Audio noise reduction: how does audacity compare to other options?

Audacity's noise reduction filter is pretty good. Before I use it, though, I want to know if I'm missing out on any fundamentally different approaches that may work better. I have some recordings of ...
3
votes
1answer
494 views

In cartoons, what is created first - video or sounds?

In some modern cartoons the animation of face, particularly mouth, is very realistic - most of vowels are mimicked correctly and on-time by mouth movements. (Particularly I'm talking about Family Guy ...
3
votes
3answers
8k 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 H.264 video, the RTP packet does not have the timestamp, and we could observe audio video sync issue while playing ...
3
votes
2answers
128 views

How do youtube professionals record audio for their video?

If some professional has a video, and they want to do a voiceover for it, how do they do it? Do they first remove unwanted clips from video and then record audio using audacity while seeing the ...
3
votes
2answers
447 views

How do I match the audio and video streams in my video file with the audio I recorded separately?

I record audio separately using an audio recorder and video separately and they usually sync up later in the NLE painlessly. But there's one particular old digital camera I have that always seems to ...
3
votes
2answers
3k views

ffmpeg: mute first 2 seconds in all audio streams

Looking to edit a blip out of the beginning of a video/audio file: How can I use ffmpeg to only edit the first two seconds of the clip so that there's no longer that blip in the audio? How do I ...
3
votes
2answers
795 views

Audio monitoring w/ headphones through HDMI port

I'm looking at a new camera that has a mic in and audio control, but no headphones out. Is there a way to get live audio out of a camera using the HDMI port and plugging into headphones? I want to be ...
3
votes
2answers
2k views

Fixing desync in a large, long video file

I've got some moderately large, compressed video files (~2+ gigs, over an hour long) from a few Open Broadcaster Software streams to Twitch.tv. All output files (including the twitch archive's export) ...
3
votes
2answers
3k views

create subtitles track by automatic timing of existing text

1 00:00:01,000 --> 00:00:04,000 I am using Adobe Premiere to produce videos in English by gluing together multiple clips put together from lots of different footage or sources. I do have a text ...
3
votes
2answers
34 views

Decreasing levels of other channels when voice channel comes in

I'm recording commentary over a video, and when I'm talking in the commentary I'd like the other channel's audio to get quieter to compensate for my voice. If anyone is familiar with discord, I know ...
3
votes
2answers
99 views

Proper Microphone for Indoor Use & Filter out Ambient Noise

I'm working on creating some training videos that will cover a single presenter from the waist up, and I'm trying to avoid the microphone being visible while also getting good sound and avoiding ...
3
votes
1answer
3k views

Photoshop CC video render has no sound

On Photoshop CC 2015.0.0 I can play my video and hear the camera audio soundtrack. When I render the resultant MP4 has no sound. My movie consists of Nikon .MOV files, and some text overlays and is 35 ...
3
votes
1answer
885 views

What is the best way to combine two audio sources into a single audio output?

A friend and I are looking to start a podcast, yea, just like everyone else on the Internet. We are trying to determine the most practical way to combine two audio sources into a single audio output ...
3
votes
3answers
1k views

Is it possible to have stereo sound from an external mic on a Canon Vixia HF G20

I have a Canon Vixia HF G20 and I cannot find anywhere in the manual about an external mic in stereo mode. The "advanced hot shoe" does support stereo and surround sound but through the Line In/Mic ...
3
votes
1answer
51 views

Mixing audio with HDMI video to replace the sound from the camera

I would like to live-stream from a camera, but replace the audio from the camera with a higher-quality mixed soundtrack, ready for sending over HDMI to a transmission device. How can I do this? I ...
3
votes
2answers
212 views

Convert FFMPEG Waveform Back to audio

I'm trying to convert an audio file to an FFMPEG waveform, train it in HyperGAN, and produce an image file to convert to an audio file. What I'm asking is if there is a way to convert a waveform image ...
3
votes
1answer
800 views

How to auto-tune the audio track of a video file to produce a modified video file

I would like to auto-tune the audio track of an mp4 video file. I know I can convert the mp4 to mp3 first and auto-tune the mp3 file, but I want the output to be a modified video clip with the audio ...