Questions tagged [audio]
Audio refers broadly to the information, be it acoustic or electronic, entering, traversing, or exiting some medium.
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Normalizing audio output loudness (LKFS/LUFS) in DaVinci Resolve 16
DaVinci Resolve 16 adds a great feature that allows applying "Normalize audio levels" on a clip using the ITU BS.1770 or EBU R128 standards, to a target level of -23 LKFS/LUFS, or similar.
However, ...
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How can I change the sample rate of an audio file, without re-encoding?
I have a lossy AAC audio file. I would like it to be slightly faster, and slightly higher pitched. I would like to avoid loosing any audio quality, such as by re-encoding the stream.
I am well aware ...
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Automating audio processing in Adobe Audition
I need to run a predefined set of filters on WAV files using Audition. The commands themselves need to be executed on the command line; I don't have the option of using Audition's Batch processing ...
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Trouble combining audio and video streams
I have two streams, one audio and the other video. I'm trying to combine them using this command:
ffmpeg -y -i audio.m3u8 -i video.m3u8 -c copy Video.mp4
I found this syntax here:
https://video....
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What is involved in the film/sound synchronization process?
The title says it all: what is involved in synchronizing a film's audio and visual elements, particularly in regard to music.
Given 30 seconds of video and 30 seconds of music meant to accompany it, ...
Aaron
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Is there a hardware acceleration for audio encoding?
Video encoding with HW acceleration takes way less time than audio encoding. Is there a way to convert ac3 to aac faster?
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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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Import secondary audio track along with video mpg into Adobe Premiere Pro
I've been trying for hours to import an mpg along with its secondary audio track into Adobe Premiere Pro. Only the primary track is imported.
I know this mpg has two tracks because I can play the ...
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Is it possible to automatically generate highlights from a video using sound?
I am looking to create an automatic highlight tool to generate highlights using sound, for example a sporting event would have an important part when there is a louder sound so, that part should be ...
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Why is audio generated by avconv choppy?
I am using avconv to generate an AV stream, and the video is perfect, but the audio is very choppy using iOS Safari.
Can anyone tell me what is wrong with my audio stream that's causing this?
When ...
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Adobe Premiere Pro clip audio works in Source panel but not timeline
I have a Adobe Premiere Pro CC 2017 project with an mp4 in the sequence.
That mp4's sound plays fine in Source Monitor.
And its sound plays fine if I right-click the mp4 in the Project panel and ...
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Premiere Pro offline transcription engine via CLI?
How can you access Premiere's local transcription engine outside of Premiere? Is there CLI access? I want the raw (hopefully JSON) data for analysis and additional per-word processing with time codes.
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Is there a video player that allows to reproduce one audio track through left channel and the other through right one?
I hope this is the right place...
I normally use MPC-BE and MPC-HC (which has quite audio processing options including a custom channel mapping, although it doesn't seem to go that far with tracks), ...
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Will moving a sound source in ATMOS just "blend" the sound, or will it create a Doppler-effect?
Intending to make a test video using Dolby ATMOS in Resolve 18.1 I wonder:
When I have a sound recorded at some fixed spot, and I want that sound to move in space via the ATMOS controls, will Resolve ...
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Need help compiling a custom, minimal FFmpeg build
I'm using FFmpeg's showspectrumpic function to generate spectrogram pictures :
I have a working FFmpeg build that does what I need, but it's quite heavy (almost 100mo).
Is it possible to compile a ...
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How can I extract all the speech sections (as an audio file) from a videos?
I have several videos from movies, which contain sections where the characters are talking with other types of sections (background music only, sound effects, etc.). I'd like to extract the speech ...
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'Maintain Audio Pitch' in Speed/Duration causes Audio Glitch
When I change the Speed/Duration of an audio track and check Maintain Audio Pitch, I frequently get a moment of louder audio immediately following the edit point. This is very frustrating…
Here's a ...
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ffmpeg split and concat flac audio file generates error "Application provided invalid, non monotonically increasing dts to muxer in stream 0"
I'm using ffmpeg to cut slices from a flac audio file then concatenate them together. I'm able to do this and the output file plays in VLC media player and appears to have the correct duration; ...
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Audio clipping after amerge in FFmpeg
Hoping someone out there can help me with this audio issue I'm having using FFmpeg. I've written a bash script using FFmpeg that processes as source a broadcast quality ProRes (HQ) file with four mono ...
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Clip super loud after embedding
With Premiere Pro 14.8.0 on Mac OS I have a simple project. In one wequence I have 1 single video and one audio:
The audio is nice and normalised, sounds perfectly all right.
Then I embed this ...
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How can I automate cutting a video along loud beep sounds?
I recorded videos (mp4) of participants in an experiment doing a task at a laptop. There are three tasks, at the beginning and end of which there is a loud beep sound.
I would like to automatically ...
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Add external mic using Sony "A/V R" plug
I have a Sony HDR-CX100 video camera that I would like to connect an external mic to (3.5mm plug), but the camera has no dedicated mic input.
However, it as an "A/V R" plug:
Before you say &...
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Seeking for advice with dealing with out of sync audio
I have a bunch of videos from games caputured with NVidia's Share.
They are trimmed using VLC.
I have one video that is 1 minute and 38 seconds long (a lot longer then the others). If I play it in VLC ...
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Why does audio not work for this mp4 when played on IPad with headphones plugged?
I'm hosting this video : https://itype.techforge.com.au/assets/videos/repeated/WordRat.mp4.
It seems to work fine unless you happen to be on an IPad and plug the headphones in. With the headphones ...
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How to compare the audio/video synchronization in video clips?
I have two video clips of the same music video. Both are made of the same video and audio tracks but of different sources and quality.
One of them is a rip from an officially released media, so the ...
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FFMPEG command to mix audio and video with adjustable volume, plays till Video length and loop audio entire video
I have:
Video file of X length
Audio of Y length
I am trying to achieve an output video that has the following qualities:
The volume level of the added audio should be adjustable
The audio should ...
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audio jumps to next frame rate - premiere pro
I have the following problem: 2 video clips with two audio clips. I try to synchronize them with the option "show audio units" to make them perfectly alligned. The problem is, when I select both video ...
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Exporting from Premiere as WAV and ProRes - audio is not in sync
My workflow:
I've completed work on a complex edit. I have made two exports:
I have exported the video (with audio) as a ProRes file with 48kHz 16-bit PCM audio.
I've also exported the sequence as ...
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FFmpeg Throws Errors When Converting 7.1 TrueHD (Blu-ray Audio) To PCM Or FLAC
I have attempted to convert a TrueHD stream to PCM as well as FLAC. Throughout the encoding process, errors occur: "lossless check failed" and others. The same set of errors occurred when converting ...
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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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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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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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ffmpeg: How to avoid "start: 0.033333" when extraction audio from mp4
When extracting audio and video separately from a mp4 and recombining again
ffmpeg -accurate_seek -ss 30 -t 10 -i input.mp4 -vn output-audio.mp4
ffmpeg -accurate_seek -ss 30 -t 10 -i input.mp4 -an ...
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Consumer grade vs professional audio
Newbie issue!
I was given 12 miniDV tapes and the Canon ZR900 camera they were recorded on to transfer onto memory sticks. I used FW400 into a Dell XPS 9100 to capture using Filmora. No problems at ...
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how to add audio to exist video using FFMPEG at specific time?
I have video file (.avi) that 10 minutes long. I also have audio file (.wav) that is one minute long. I need to add the audio to the video, but the audio needs to start at one minute in to the video. ...
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How does speeding up / slowing down audio with FFMpeg work technically?
I've been looking into FFmpeg's tools for speeding up and slowing down portions of video using their built in filters (such as here). For video speed filtering it discusses a little bit about you can ...
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Trying to understand the delay converting a sequence of images to video
I am using java to create image files that I am converting to video using FFMPEG. I am creating the midi and audio simultaneously on reaper then using the duration of the notes on the midi file to ...
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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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Converting an AAC Mono file to AAC Stereo, higher audio bitrate?
I hope someone can help with this issue. A client is sending me videos recorded with iPhone; with dual-channel MONO AAC-LC audio, an average of 89 kbps. It's mono but dual-channel. I'm editing with ...
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Are there any omni directional stereo mics for camcorders
I am looking for a good microphone to film trains as they go by.
I have been looking, at the Opteka VM-200. But I am concerned that the shotgun directional characteristic will not work well, since I ...
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What's the best balance price/quality audio recorder for meetup and small conf
I am doing some meetup recording and I want to automate the thing.
Here are my current devices to record any meetup:
- OBS
- logitech c922
- AverMedia LGP Lite
I need a better sound that the ...
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Prelude and Premiere Workflow with DSLR and External Audio
This is a little long, but hopefully will make sense...
I am shooting with a GH4 to record interviews and cuts the videos into 4GB segments. I'm recording the audio with a Zoom (external recorder). ...
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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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Show audio waveform in FCP video?
How can I show the audio waveform in a video similar to the one below?
I'm using Final Cut Pro X on OS X 10.10 Yosemite.
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ffmpeg - Specify FC (center) instead of mono
I am trying to specify a single mono channel to be named 'Center' when viewed in Quicktime player, I know that technically specifying FC is mono, but in my user case I need it to actually be named '...
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Streaming 2 local and some remote players audio issue
I am trying to set up for streaming. Here is what i want to accomplish. I will be the only one streaming video and streaming from the same computer i am playing on. I have a mixer attached to my ...
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Sony Vegas 12 Not Rendering Parts Of Video
Using Sony Vegas Pro 12 and i am rendering a video. However the rendered video hasn't got any audio and some video parts are black. I am using a some transitions and i am currently trying to fix the ...
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Losing audio in re-encoding with ffmpeg
I have some DVDs I want to save MP4s from. The video files are VOB files. I can play them if I change the extension to .mp4, but I can't use the seek bar in Windows Media Player. Also, the files are ...
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How to transcode HLS with multiple audio tracks
I am trying to create an HLS playlist with multiple audio streams. I have the following files:
videoHD.mp4
videoSD.mp4
audioEN.mp4
audioFR.mp4
audioIT.mp4
How would I transmux these all together in ...
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How to sync the dubbed audio to make a dual audio .avi
I have a show with the original audio, XviD encoded with mp3 in a .avi. The local TV has started broadcasting the show with the dubbed audio. I captured some of the shows off of the TV broadcast, ...
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