Re: Low bitrate MP3 (+ unsupported bitrates)
Reply #44 – 2024-04-18 15:28:52
So, how 18kbps and 20kbps files are CBR and they are working with Flash Player? I'm uploading a 20kbps file example... What makes you think it's 20 kbps CBR? Because some player told you so? Have you ever thought of double-checking this value via others apps? Especially via apps that are designed to analyze media files? It is not a CBR file, but a VBR (or ABR) file without a proper header, which data is encoded using 16 kbps and 24 kbps, so it gives an average of 20 kbps, since (16×9+24×9)/18=20.$ mediainfo.exe google.mp3 Audio Format : MPEG Audio Format version : Version 2.5 Format profile : Layer 3 Bit rate mode : Variable Channel(s) : 1 channel Sampling rate : 11.025 kHz Compression mode : Lossy Stream size : 2.29 KiB (100%) $ mp3val.exe google.mp3 WARNING: VBR detected, but no VBR header is present. Seeking may not work properly. WARNING: No supported tags in the file INFO: 18 MPEG frames (MPEG 2.5 Layer III), no tags, no VBR header $ mp3packer.exe -i google.mp3 INFO: MPEG2.5 layer 3 18 frames 11025 Hz Bitrate distribution: 16: 9,0 24: 9,0 $ mp3guessenc.exe -f google.mp3 Frame histogram 16 kbps : 9 (50.0%), size distr: [ 9 x 104 B] 24 kbps : 9 (50.0%), size distr: [ 9 x 156 B]
• Join our efforts to make Helix MP3 encoder great again • Opus complexity & qAAC dependence on Apple is an aberration from Vorbis & Musepack breakthroughs • Let's pray that D. Bryant improve WavPack hybrid, C. Helmrich update FSLAC, M. van Beurden teach FLAC to handle non-audio data