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Questions tagged [bitrate]

Bitrate is the number of bits that are conveyed or processed per unit of time.

Bitrate is the number of bits that are conveyed or processed per unit of time.

More information at https://en.wikipedia.org/wiki/Bit_rate

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libfaac imposes bitrate limits?

I'm trying to encode some audio on Ubuntu 12.04 Linux. I need to use libfaac (using version 1.28) to encode and I want to encode at a very low bitrate - the total including transport stream overhead must be below 64kbps. The input audio is: PCM,…
lightdee
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ffprobe shows bitrate of 0.0 or N/A for h264 stream

I have a 11-minute .mkv file with a h264 video stream, taking up 184MB of space. I would like to reduce the size of this file. I figured I could just reduce the bit-rate. But ffprobe doesn't output any. In fact, it says the length of the file is…
Dan
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Given a streaming video, how to calculate the size(in bytes) of the video that should have been downloaded to play the video till time t

I'll try to make myself as clear as possible. I am streaming a video and I'd like to know for each time t in the video, the no. of bytes that should have been loaded in client's machine to play the video from start to time t. I want this info as an…
prongs
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Bitrate limitation on AVFoundation screen capture on OSX Lion

I'm using AVFoundation on OSX Lion to do screen capture. Accomplished as follows: self->screenInput = [[AVCaptureScreenInput alloc] initWithDisplayID:self->screen]; self->dataOutput = [[AVCaptureVideoDataOutput alloc] init]; …
George
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Flash Encoding (FLV): What are the prefered bitrates?

I inherited a project that is sending videos off to a remote encoder to encode into FLVs. Today, I noticed that we are asking them to encode at 1024kbps To me, this seems extremely high. What is everyone else using? What is YouTube using for…
eduncan911
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In ffmpeg: Can't get peak bitrate values within 10% error tolerance for HLS playlist files

I'm using ffmpeg to produce several HLS variant playlists from an .mp4 file. When I check master.m3u8 file with mediastreamvalidator I get: Error: Measured peak bitrate compared to master playlist declared value exceeds error tolerance I…
ALS20394
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ffmpeg: How to limit bit rate of video output?

To a 2GB raw video file taken in front of a greenscreen I want to add the alpha channel. My problem is: the output files appear much too large to me (about 20-fold the size of the input), and OpenShot, the video editor, seems unable to handle such…
Mat
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Manipulate video with ffmpeg without losing quality

I am rotating a video with ffmpeg with the following code: ffmpeg -i nd750_a0040.MOV -vf "transpose=dir=clock, transpose=dir=clock" out.mkv The resulting file is almost 10x smaller than the input. I have found this question which addresses a…
TheChymera
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Get bits per each second FFmpeg/Mediainfo

Is there any way to get how many bits per second are in any video? ej: ffmpeg/mediainfo -commands input.mkv Result: sec 1 - 500bits sec 2 - 600bits sec 3 - 300bits Thanks!
Christian Recinos
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How to read the bit rate information from a .mov video file header (QuickTime File Format)?

I've been trying to read some values out of the metadata of a .mov file (QuickTime File Format) with limited success. I've been using the following link as a reference: Introduction to QuickTime File Format Specification I've managed to correctly…
Sheridan
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Set content-length when converting video stream to audio (w/ FFMPEG & Node.js)

So I'm building a program that requires that I take a video and convert it to audio. I'm currently streaming the audio directly to the browser via node.js, but I've run into a major problem: I don't know how to find out how many bytes my audio is.…
Taconut
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Find bitrate of an audio file on a website without downloading the file

I want to find the bitrate of an mp3 on a website without downloading the file. Using Python3 & Mutagen Ported Version Code from mutagen.id3 import ID3 audio =…
Muneeb K
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Video Bitrate calculation for uncompressed video

I am trying to understand the bit rate for uncompressed video. But could not understand exactly while referring http://web.forret.com/tools/video_fps.asp?width=3840&height=2176&fps=30&space=yuv420&depth=4 For a 3840x2176(width x stride) video with…
Balamurugan A
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How to use different audio encoding bitrate for media recorder android

In my application i'm using media recorder for audio recording. I want to use different bit rates 32,64,128,160 etc. recorder = new MediaRecorder(); /******Audio Source******/ try{ if(audio_source.equals("Camcorder")) …
yuva ツ
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Is "Bit rate" property fixed in index 28?

I am trying to read "Bit rate" property of audio files. I know how to get the value but the way I am doing it I don't think is the most efficient. Shell shell = new Shell32.Shell(); Folder objFolder = shell.NameSpace(path); for (int i = 0; i <…
ahsant
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