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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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Flutter : smooth video streaming in videoplayer

I am making an application which needs to stream videos stored at a server. When i play the video it buffers a lot. Is there anything i can do to make the streaming smoother without losing much of the quality? Video format: mp4, mov Flutter video…
Rohan Lawande
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ffmpeg AAC audio encoding with libfdk_aac: difference between -q:a and -vbr quality parameters?

I want to encode an audio file to AAC, using libfdk_aac, and I'm wondering about the quality parameters. I want to use variable bitrate encoding, not constant bitrate. It seems I can specify the quality either with the -vbr N parameter (with N=1..5)…
RocketNuts
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What makes the bitrate of dash stream output low as compared to bitrate of input mp4 video

I used ffmpeg to convert bbb.mp4 to dash stream. I used the ffprobe to get the bitrates of input and output (shown below) For the same resolution video 1920x1080 input has bit rate 2998 kb/s where as output has bitate of 20 kb/s. My profile is set…
Chinmaey Shende
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How do I calculate optimal dimensions and bitrate for displaying a video on an iPhone?

I'm currently developing a mobile app that will have a library of 2-5 minute videos (approx 100 in total) and going through the process of determining which versions of the videos to have ready to serve to different mobile devices. In my research, I…
wachutu
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About system data rate in H264

I have a engine to check the H264 video is compliance with AVCHD or BDMV spec, the SPEC mentions the MAX system data rate is up to 24 Mbit/s, I want to know how to calculate the system data rate? Does it mean the average of whole file? Or does it…
Yigang Wu
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FFMpeg and max bitrate

For a personal project, using AV1 codec, I have a bitrate constraint for a video to 88kbps, with choosen video bitrate at 66kbps and mono audio bitrate at 22kbps. I currently use this command: ffmpeg -i input.mp4 -c:v libaom-av1 -strict -2 -b:v…
Aurelien Stride
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How to calculate bitrate of PAL format?

I have to calculate the bitrate of PAL format (576∗720). I have the following data: 25 frames per second Interlaced Interior representation is: 4:2:0 8 bpp I have tried the following formula but I am really not sure at all if it is correct…
Teo Protoulis
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FFMPEG Bitrate Calculation / Optimization

I wrote the following wrapper for FFMPEG: function Video($input, $crop = null, $scale = null, $output = null, $extra = null) { $input = @new ffmpeg_movie($input); if ((is_object($input) === true) && ($input->hasVideo() === true)) { …
Alix Axel
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Is there a command for video bitrate in html5?

I am using "document.querySelector('video').playbackRate=1" as a console input in the edge browser, for setting the playbackspeed on the fly. Is there a similar command to use for customizing the bitrate of that video stream?
soccerjk
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does using MPMoviePlayerController to play videos that reside on remote server require limiting of bitrate when using Cellular network?

In my app among other things, I am using MPMoviePlayerController to play video files (not streaming source) that reside on a remote server. I saw this post and I am wondering if my app can be rejected for “transferring excessive volumes of data”…
Kremk
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What is the bit rate?

I am new to audio programming, But I am wondering formula of bitRate, According to wiki https://en.wikipedia.org/wiki/Bit_rate#Audio, bit rate = sample rate X bit depth X channels and sample rate is the number of samples (or snapshots taken) per…
crazyeyes
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generating silence audio using ffmpeg with specific bitrate and duration time less than one second cannot get the audio with the desired bitrate

I'd like to generate a silence audio file using ffmpeg with specific bitrate and the duration is less than one second. I found that the generated audio file does not have the desired bitrate. But if I expand the duration to 2 seconds, the bitrate…
bambooom
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Is it realistic to stream 12-16 bit audio through SPP bluetooth in realtime?

I have tried to send 12-bit audio to be listened to in real time through the HC05 SPP bluetooth module hooked up to an arduino and DAC over serial with a python RFCOMM socket. I have since learned that Serial Port Protocol is not very great at all…
user P520
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FFMPEG increases bitrate after splitting an avi file

I am trying to split a video (.avi) file with duration of 1 hour to 8 minutes. I am using the following command ffmpeg -i videos_22_05_18/cnbc.avi -ss 00:00:00 -to 00:08:00 -c copy 1.avi But it makes a video of 37 minutes instead and also the…
Yaser Sakkaf
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How to set the highest bit rate to a flac output on Pydub?

I've trying to change the format of all my pack samples, from .WAV to FLAC. I made a script that checks all the subdirectories and finds file paths (WAV files specifically), and after find, it uses Pydub to convert the files. The problem is that the…
Átila Gama Silva
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