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Questions tagged [audio]

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

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How can I manually set the LFE volume in Premiere's “Audio Track Mixer” panel?

In the Audio Track Mixer panel in Premiere Pro 2019, each channel has a slider that adjusts the LFE volume. However, setting the volume this way is imprecise. How can I manually set this value?
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Video editing software with Audio scrubbing[Windows 10- 64bit]

I am looking for a Video editing software to do some post production work on my animated movie(mp4 file without audio).I use Blender VSE,but it lacks severely in effects like transitions ,FX etc . My ...
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Final Cut Pro is distorting my music at the very end

I have a problem and I can't find any fix. When I import songs into FCP it sometimes distorts them in the end. But the problem is that they sound fine outside of FCP, and I have paid for them, so it's ...
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1answer
23 views

FFMPEG - Creating script to convert a video into audio file (or anything related really) + diverses questions

Good day everyone. Im making my babysteps into ffmpeg, and so far this tool has been really helpfull. Anyway. Im currently using this line as a convertion basis : ffmpeg -i name.mov -c:v libx264 ...
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13 views

Shorten Video By Removing Quiet Audio Sections with Video

What tools are available to take a video and remove out the silent sections found with its corresponding video track, where the criteria is that the audio goes below a certain threshold? I can do ...
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4 views

Audio subtly out of sync with video - how to fix?

I have an MKV file that has an issue with the audio - it subtly lags behind the video. They start in sync, and then over the course of the whole clip they drift out of sync. My first idea was that ...
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1answer
11 views

FCP loses second audio track on import

I have mp4 files with two stereo audio tracks, one with voice, and the other with game sounds. Unfortunately, when I import into Final Cut Pro, and then expand audio components, I only get the first (...
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7 views

Sync Audio - Varying Stretches and Shrinks

We have a 3 webcam setup, and a desk microphone. Each camera is recorded separately, and in post we are trying to show all 3 cameras at the same time, but use the audio from the desk mic for the ...
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1answer
9 views

Speeding up or slowing down a clip introduces metallic noise when adjusting for pitch

I'm slowing down some audio. I chose to "Maintain Audio Pitch" because I don't want it to sound like a very deep voice. However, when I play back the audio, it sounds like it's going through a metal ...
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6 views

How to determine audio full LCID language identifier from a video file?

I've successfully created a video with 3 language audio tracks (English, French, Spanish). When playing back in a video player that recognizes the languages, I can correctly switch between these ...
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1answer
17 views

Append part of the audio at the end of another audio

With audio files A and B: A : |--- Some content ---|--- Extra content --- | B : |--- Some content ---| Assume the end of B is where the start of the extra content in A. I want to append that extra ...
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20 views

SDI or HDMI to USB3 interface with 16 audio channel support

I'm looking to take a video feed and multiple audio channels into a Windows laptop. The audio channels are essentially live event commentary in various languages, which the laptop will then stream to ...
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1answer
22 views

Help needed editing music more precisely in Premiere

I have shot a video with 23,976 FPS and now need to expand the timeline to double that, so I can make more precise edits with the music. But Premiere Pro only allows certain FPS Is there a way to ...
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11 views

Dead Cat for BMPCC4k

I've seen dead cats for the microphones of DSLRs and the GoPro nad was thinking if there is a deadcat for the internal mics of the BMPCC4k. I only use the mics as a reference point, as I don't have ...
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1answer
7 views

Sony UWP-D Audio Issues

I have a Sony UWP-D Wireless Lav Mic set and I'm experiencing difficulties with audio in my office building. I can film any exterior shots with no issue. I also have no audio issues with audio within ...
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1answer
64 views

Question about ffmpeg's overlay variable t

I've got an ffmpeg command that overlays a line on a video and moves it from left to right while the video plays: ffmpeg -i clip.mp4 -i line-with-transparent-white.png -filter_complex "[0:v][1:v]...
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71 views

FFmpeg: Align Video & Audio of Desktop Capture

I am using FFmpeg's built-in gdigrab & dshow to record the display & audio of my system. I am encoding to uncompressed H.264/AVC video & uncompressed PCM/WAV audio. I had been having two ...
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1answer
12 views

Frequency of Macbook fan sound

My macbook spins off the fan like crazy which is audible when I'm recording a video when I show some stuff in Photoshop for instance. I'm thinking I could try to filter it out in Premiere Pro with ...
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2answers
18 views

How to avoid audio border magnetics on Final Cut Pro X?

This might be an easy question, but I'm not able to find the answer. Sometimes the audio clip is slightly small than the video clip. I need to move the audio just a little bit (like less than 1 second)...
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7 views

Audio disappears partly after rendering VEGAS MS 15 Platinum

Having problems with Vegas MS 15 Platinum rendering- irrespective of the length of the project, the audio will disappear not completely after rendering, but about 30 min from the beginning of the ...
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1answer
22 views

Combine audio from one video file with video from another

I would like to combine high-resolution video in English with a foreign-language audio track from a low-resolution version of the same movie. What is good software (for Windows 7) to combine audio ...
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9 views

Audio Issues in HERO6 Protune Settings

GoPro Hero6 creates a separate .wav file along with the .mp4 video. But my .wav-s are all too silent I can barely hear them. As the excerpt from HERO6 manual shows, I followed the Protune instructions ...
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1answer
24 views

Surround sound for cinema feature film (Pricing of Dolby Surround)

We are planning to shoot our first feature film with a budget of around 100'000-2'000'000$. And we'd like to master it in 5.1 Surround sound. Normal procedure would be to do it with Dolby Surround, ...
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1answer
32 views

“Opus cuts audio above 20kHz” - Is this normal for lossey audio codecs?

Summary: 1. Is it normal among lossey codecs? 2. what are the effects of this specifically when handling this 'cutoff' audio file? 3. Why is it still saving the file as 48khz if it doesn't contain ...
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1answer
65 views

Adding a sine generated audio track to a video stream with ffmepg

I'm generating an MPEG transport stream from a PNG file with ffmpeg succesfully with the following command: ffmpeg -re -loop 1 -i smpte-color-bars-1080p.png -r 25 -vcodec libx264 -tune zerolatency -f ...
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2answers
45 views

Can anyone recommend a good/safe free spectrum visualizer? [closed]

Something that can generate fairly nice displays for videos would be good. Can just be the generic type where it displays differing frequencies as bars, but something nicer than the harsh ffmpeg ...
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1answer
64 views

MPEGTS & HLS: Only second segment onwards is valid

When i use hexadecagonal audio channel layout in an mpegts container, I can receive and play back the stream fine only if I configure the hls server to allow serving the very first segment, and then ...
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1answer
173 views

ffmpeg add audio to video not working in below command

in below command final video is created but sound of second video is muted after some time. here duration of audio and video is same. ffmpeg -y -i intro.mp4 -i videoaction.mp4 -i outro.mp4 -i audio1....
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1answer
10 views

Final Cut Pro X — Connect audio clip to another audio (not video)

I have a simple video with some background noises added and a background audio track. However, background audio track is too long, so I carefully cut it into multiple pieces and seamlessly mix: It ...
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1answer
21 views

Filter out calm parts of audio, let through really loud ones

I have a project where I have one video and two audio tracks. The first audio is from the line-in microphone, the second one is from the room environment. I only want the second audio to play when ...
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1answer
208 views

How to resolve ffmpeg error “input contains (near) nan/+-inf”?

I'm trying to convert some old WMVs into MP4s, but ffmpeg will not do it. I keep getting the following error: input contains (near) nan/+-inf audio encoding failed Exact command used is: ffmpeg -...
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33 views

Set audio channel title in a MOV file with ffmpeg

Today I received some materials in a MOV container. The MOV file is done pretty well and if you see in VLC they assigned also the channels names (channel title). This is something that I would like ...
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1answer
516 views

Long video ffmpeg transcode makes audio go out of sync

I have recorded a 50 minute video, edited it in Hitfilm Express to censor/blur people, and exported it in Hitfilm's high resolution format, generating an 80GB file. When I try to transcode this file ...
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1answer
29 views

What is the difference between audio Sampling rate and Frame rate?

I have a video file with audio. ffprobe reports two different numbers: Sampling rate and Frame rate. I understand the 48kHz rate--there are 48,000 audio samples every second. What is the other number, ...
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1answer
35 views

By how much can video and audio be out of sync?

If I have an interview or lecture style video and the audio is out of sync, by how much can it be out of sync before the average person would easily notice? I'm currently trying to create an HTML5 ...
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1answer
295 views

How can I force YouTube to convert my video's audio stream to Opus or Vorbis / Youtube Red issue

I know the answer, which is probably "there is no way", but bear with me for a moment. I am uploading videos to YouTube, and on my Android phone I am downloading them using YouTube Red. I am playing ...
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1answer
20 views

Too much bass in desktop sounds with a headset, but not during recording, only afterwards

I recorded some video footages with my voiceover, both with Fraps and OBS. (Also streamed with the latter) While I was playing everything was fine. (I played with a headset) When I played the videos ...
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1answer
50 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 ...
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1answer
590 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 ...
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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 ...
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2answers
1k 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 ...
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2answers
29 views

How can I make videos like this? (mostly samples pitched into iconic pop or meme melodies)

Are there any explanations or tutorials? People don't seem to discuss how they're done in the comments at all and google doesn't help either. I looked up some sheet music and pitched and adapted the ...
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1answer
24 views

Audio level goes up and down in rendered output [After Effects]

I render my AE project using Media Encoder, but when I check the output, its audio level clearly changes and go up at some parts and down on other parts! and its not consistent at all. The thing is ...
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0answers
23 views

Is it possible to cut video based on audio?

I wonder if any of you guys know some solution and can help a small team of inexprienced (in terms of video) podcasters. We're producing our Audio podcast in a purely audio editing software (Reaper) ...
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2answers
6k 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
385 views

AAC with no global headers is currently not supported

As per ffmpeg bitstream filter documentation, if we use -bsf:a aac_adtstoasc then the AAC stream from a raw ADTS AAC or an MPEG-TS container to MP4A-LATM. https://ffmpeg.org/ffmpeg-bitstream-...
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6 views

how do I fade audio with transition in iMovie?

New to iMovie and using transition Fade to Black. It seems natural to also fade the audio with this transition but I"m having to do it manually. Is there a way to not do this manually (ie, selecting ...
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1answer
66 views

Keeping sound from underlay video in creating PIP video with ffmpeg

I'm trying to make a video with an overlay video inside (PiP) but I can't get the sound source right, I need the sound from the underlay video but I keep getting the sound from the overlay video. I ...
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1answer
64 views

picking a frame and an overlapping audio from a video

I know how to extract frames and audio from a video using ffmpeg. But what I want to is, to pick a random frame in that video, and then picking a random 1 second audio clip that overlaps in time with ...
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1answer
22 views

Equivalent to audio samples in video

I wonder what's the smallest component of a video file. I know, in graphics, it's the pixel, in sound,, it's the sample. I also know video is made by frames + audio, so, is it pixels + samples?