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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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How to change webRTC audio bit rate in Firefox (51)

I have searched and searched but can not find a definitve answer to the question. By default Firefox sets the bitrate for any audio sent via webRTC to 40 kbps. Changing the SDP parameter works in any other browswer supporting webRTC with the…
Armin Hierstetter
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How to set abr(average bitrate) on mp3 files using ffmpeg

I need to convert my mp3 from constant or variable bitrate to average bitrate. how can I do this? I've used -b 250k -minratre 50kb -maxrate 260kb But it goes constant bitrate when I run the command.
kmthrong kmthrongi
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how to set bitrate correctly for aac encoding OSX

I have a 1 second PCM data which I write into an AAC file successfully. However, I can not control the bitrate of the output file. Here is the configuration of my AAC codec: AudioStreamBasicDescription clientFormat = {0}; clientFormat.mSampleRate …
mbaros
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How to get an MP3 bit rate in SWIFT

I am searching for a way of getting an mp3 bitrate like 128kbps or 320kbps for mp3 audio from url link. I have a UITableView that loads a list of files from url list, and I would like to display an audio quality. I have tried using AVAudioPlayer and…
Yaroslav Dukal
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Qt wrong duration with variable bitrate

QMediaPlayer calculates wrong duration with variable bitrate mp3. Yes, I know a similar topic was already opened, but is pretty old (2012). In addition, both VLC and Clementine, using Qt, for the same mp3 files can calculate the exact duration. So,…
Salvo Matteini
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ffmpeg (webm) doesn't respect requested bitrate

On a 2 minute clip: ffmpeg.exe -pass 1 -passlogfile pass.log -i E002.avi -b 368k -maxrate 1000k -ab 62 -y out.webm ffmpeg.exe -pass 2 -passlogfile pass.log -i E002.avi -b 368k -maxrate 1000k -ab 62 -y out.webm the bitrate still goes up to…
Sirber
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A COM Port on a Windows PC indicates the bit rate, or the Baud rate?

If you search around the internet, you can easily find websites, google images, as well as many (YouTube) videos that explain the various properties of COM/serial/RS232 ports. As far as i'm concerned in most of these they state that in the COM port…
KeyC0de
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Lame - increase bitrate to 320

First I want to show my method for converting source .wav files to .mp3 by Lame library: - (void)convertFromWav:(NSString *)sourceFilePath ToMp3:(NSString *)resultName { NSString *mp3FileName = [resultName stringByAppendingString:@".mp3"]; …
Libor Zapletal
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IIS: Download large file with wget - connection always fails with Bitrate Throottling

I have a problem to make IIS to allow download file with Bitrate Throottling. I set limit file to 100kb/s. There is no problem without bitrate limitation. But with limit I have a problem. I'm using a code similar to described in this…
Alexei
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Gstreamer AAC ADTS with variable bitrate time duration calculation

I am using gstreamer for my aac files . I want to know how to calculate exact duration for AAC file with ADTS format(ie variable bitrate) in fast way. Right now I am calculating estimated duration at the start of frame which gives more error…
geek2geek_AWS
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Bitrate JWplayer

I am having trouble to make jwplayer work with different bitrates. For each video, I am creating new output files with different suffixes that have lower bitrates: For instance, Output 1 (high bitrate): test-original.mp4 Output 2 (medium…
kandan
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Change Bitrate of AudioRecord on Android

How can on Android the bits per sample be changed from 16 bit to 8 bit (or other bitrates) in a AudioRecord object when recording in wav format? This doesn't work (as discussed for example here: Using AudioRecord with 8-bit encoding in…
user2212461
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How to find the bitrate value of the quality in jwplayer 6 auto mode?

I want to know the bitrate during video playback in jwplayer 6's auto mode. When the video starts, the selected value is "Auto". But unlike other values, the "Auto" value doesn't include bitrate or other parameters. my default parameters: primary:…
The Goat
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What is the correct way to set maxrate on android ffmpeg library?

I'm trying to control the max bitrate output using ffmpeg library on android. When I use the ffmpeg command line, the output bitrate is 166.78 kbit/s ffmpeg -y -i input.mp4 -c:v libx264 -preset medium -crf 29 -profile:v baseline -level: 3.0 -s…
Marcotmp
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x264 rate control

We are using the x264 encoder in a video conferencing project, we have the basic streaming video working, however, we are having trouble understanding how the various rate control settings determine the final bitrate. We set the following…
Craig
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