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audio - How to convert MP3's to constant bitrate using ...
https://stackoverflow.com/questions/37768732/how-to-convert-mp3s-to-constant-bitrate-using-ffmpeg#:~:text=You%20can%20convert%20to%20a%20contant%20bit%20rate,reduce%20to%20mono%20and%20a%208k%20sample%20rate%3A
bitrate - How to force Constant Bit Rate using FFMPEG ...
https://stackoverflow.com/questions/10908796/how-to-force-constant-bit-rate-using-ffmpeg
ffmpeg -i input -b 1200k -minrate 1200k -maxrate 1200k -bufsize 1200k -ab 64k -vcodec libx264 -acodec aac -strict -2 -ac 2 -ar 44100 -s 320x240 -y output.mp4 Had to use aac instead of libfaac, which requires "-strict -2".
ffmpeg - How to specify audio and video bitrate - Super User
https://superuser.com/questions/319542/how-to-specify-audio-and-video-bitrate
In order to specify the target bitrate for video and audio, use the -b:v and -b:a options, respectively. You can use abbreviations like K for kBit/s and M for MBit/s. For example: ffmpeg -i input.mp4 -b:v 1M -b:a 192k output.avi Note: This is a simple one-pass encode that tries to reach the specified bitrate at the end.
FFmpeg H.264 Constant Bitrate (CBR) Encoding | Broken ¦ Pipe
https://brokenpipe.wordpress.com/2016/10/07/ffmpeg-h-264-constant-bitrate-cbr-encoding-for-iptv/
FFmpeg H.264 Constant Bitrate (CBR) Encoding. October 7, 2016. October 11, 2016. / admin. Example command using a single-frame VBV: ffmpeg -i <input> -r 25 -c:v libx264 -x264opts nal-hrd=cbr:force-cfr=1 -b:v 2500k -minrate 2500k -maxrate 2500k -bufsize 100k output.ts. where:
FFmpeg: Extract Audio From Video In Original Format Or ...
https://www.linuxuprising.com/2019/11/ffmpeg-extract-audio-from-video-in.html
Extract audio from video, converting the extracted audio to mp3, and specifying a constant audio bitrate (CBR) quality: ffmpeg -i myvideo.mp4 -b:a BITRATE audio.mp3 Replace BITRATE with these available CBR options: 8k, 16k, 24k, 32k, 40k, 48k, 64k, 80k, 96k, 112k, 128k, 160k, 192k, 224k, 256k, or 320k.
[ffmpeg] why using AAC codec the bitrate is alwais VBR? I ...
https://forum.videohelp.com/threads/391032-%5Bffmpeg%5D-why-using-AAC-codec-the-bitrate-is-alwais-VBR-I-need-CBR
General Complete name : E:\Media\FF\WeaveSample_aac.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom (isom/iso2/mp41) File size : 748 KiB Duration : 46 s 998 ms Overall bit rate mode : Constant Overall bit rate : 130 kb/s Writing application : Lavf58.22.100 Audio ID : 1 Format : AAC LC Format/Info : Advanced Audio Codec Low …
When converting audio to an MP3 using CBR, result ... - …
https://trac.ffmpeg.org/ticket/431
mediainfo test_ffmpeg_cbr.mp3 General Complete name : test_ffmpeg_cbr.mp3 Format : MPEG Audio File size : 3.23 MiB Duration : 3mn 31s Overall bit rate : 128 Kbps Encoding settings : Lavf53.11.0 Audio Format : MPEG Audio Format version : Version 1 Format profile : Layer 3 Mode : Joint stereo Mode extension : MS Stereo Duration : 3mn 31s Bit rate mode : Constant Bit rate …
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