Open Beelucky opened 4 years ago
The audio is stored as AAC in the MP4 container, which should ideally have an m4a
extension, as I outlined in Issue 148. AAC is about 2x better than MP3 in terms of quality/bitrate, and almost as good as OGG. So I think that your issue is not really relevant, however if you want to add an option for MP3, which is an older but slightly more compatible recording format, you can make that a new issue.
For reference, relevant MediaInfo lines for the audio stream in sample recordings with the "High-Quality" option off and on:
Property | LQ | HQ |
---|---|---|
Format | AAC | AAC |
Format_AdditionalFeatures | LC | LC |
CodecID | mp4a-40-2 | mp4a-40-2 |
BitRate_Mode | CBR | CBR |
BitRate | 13500 | 192000 |
BitRate_Nominal | 12200 | |
Channels | 1 | 1 |
ChannelPositions | Front: C | Front: C |
ChannelLayout | M | M |
SamplesPerFrame | 1024 | 1024 |
SamplingRate | 8000 | 44100 |
FrameRate | 7.812 | 43.066 |
Compression_Mode | Lossy | Lossy |
Title | SoundHandle | SoundHandle |
Language | en | en |
Perhaps format to mp3 or ogg that little size bitrate