Difference between revisions of "Preparing releases from internet-based broadcasts"
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==Minimum Acceptable Bitrates== | ==Minimum Acceptable Bitrates== | ||
| − | Minimum acceptable bitrates for internet broadcasts need to be taken into account. If you have a choice between different broadcasting formats, choose that one with the highest quality and that means that with the highest bitrate. One has to know that all digital formats used to broadcast music are lossy and do not contain all the original audio information. And low bitrates are extremely lossy and can easily sound very bad. '''Do never upload internet broadcasts with ''low bitrates'' to [http://themixingbowl.org/ TheMixingBowl]''' | + | Minimum acceptable bitrates for internet broadcasts need to be taken into account. If you have a choice between different broadcasting formats, choose that one with the highest quality and that means that with the highest bitrate. One has to know that all digital formats used to broadcast music are lossy and do not contain all the original audio information. And low bitrates are extremely lossy and can easily sound very bad. '''Do never upload internet broadcasts with ''low bitrates'' to [http://themixingbowl.org/ TheMixingBowl]'''. Note, that the [[AAC]] and [[AAC|AAC+]] formats can be broadcasted in the RAW format (with the extension .aac) but can also be present in MP4 containers (extensions .m4a or .mp4). You need to check the file information if you want to be on the safe side. |
The minimum requirements for a decent bitrate are: | The minimum requirements for a decent bitrate are: | ||
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* [[Ogg Vorbis|OGG aoTuV]]: 48-64kbit/s (a heavily optimized audio codec, the best available). | * [[Ogg Vorbis|OGG aoTuV]]: 48-64kbit/s (a heavily optimized audio codec, the best available). | ||
| − | + | Apart from all these minimum considerations, try to avoid streams sounding "crispy" with lots of distortions at higher frequencies. Also, try to avoid [[WMA]] and [[RA]] broadcasts. Usually, only [[WMA]] and [[RA]] broadcasts at bitrates of 64kbit/s and below exist. That make sets recorded from radio stations broadcasting in these decent audio formats unsuitable for TMB uploads. To make it even more worse, these formats often are victims of 'bitrate management' what means that your stream can jump between different bitrates during a set (down to very low bitrates). Do not use them! | |
Although the various [[Ogg Vorbis|OGG]] variants appear to be the best available you probably won't find suitable radio stations broadcasting in these formats. Radio stations broadcasting in mp3, mp2, and aac+ are quite frequent on the other hand... | Although the various [[Ogg Vorbis|OGG]] variants appear to be the best available you probably won't find suitable radio stations broadcasting in these formats. Radio stations broadcasting in mp3, mp2, and aac+ are quite frequent on the other hand... | ||
Revision as of 15:16, 29 July 2006
Internet Radios: Common rules, frequent mistakes and all about superior quality.
Contents
Basic Internet Radio Selection Considerations
- For TheMixingBowl of interest are only the stations offering DJ sets that you can't buy anywhere as that it is what TheMixingBowl is all about. Radio stations meeting this requirement are listed here.
- Only few Internet radio stations broadcasting DJ sets are suitable for TheMixingBowl.org as they do meet the minimum quality requirements to allow their sets being uploaded to TheMixingBowl. All other internet radio stations are broadcasting nuked sets of low quality (sets that would be available elsewhere in much higher quality). The above mentioned list of Radio Stations can be considered to represent a Whitelist of suitable radio stations.
Minimum Acceptable Bitrates
Minimum acceptable bitrates for internet broadcasts need to be taken into account. If you have a choice between different broadcasting formats, choose that one with the highest quality and that means that with the highest bitrate. One has to know that all digital formats used to broadcast music are lossy and do not contain all the original audio information. And low bitrates are extremely lossy and can easily sound very bad. Do never upload internet broadcasts with low bitrates to TheMixingBowl. Note, that the AAC and AAC+ formats can be broadcasted in the RAW format (with the extension .aac) but can also be present in MP4 containers (extensions .m4a or .mp4). You need to check the file information if you want to be on the safe side.
The minimum requirements for a decent bitrate are:
- MP3: 128kbit/s,
- MP2: 144-160kbit/s,
- AAC: 128kbit/s (the older AAC format is not better than mp3),
- AAC+: 64-80kbit/s (check the file information - they appear as AAC+, HE-AAC or AAC+ v2),
- OGG: 64-80kbit/s (the mainline OGG format),
- OGG aoTuV: 48-64kbit/s (a heavily optimized audio codec, the best available).
Apart from all these minimum considerations, try to avoid streams sounding "crispy" with lots of distortions at higher frequencies. Also, try to avoid WMA and RA broadcasts. Usually, only WMA and RA broadcasts at bitrates of 64kbit/s and below exist. That make sets recorded from radio stations broadcasting in these decent audio formats unsuitable for TMB uploads. To make it even more worse, these formats often are victims of 'bitrate management' what means that your stream can jump between different bitrates during a set (down to very low bitrates). Do not use them!
Although the various OGG variants appear to be the best available you probably won't find suitable radio stations broadcasting in these formats. Radio stations broadcasting in mp3, mp2, and aac+ are quite frequent on the other hand...
Ripping Internet Streams
- Suitable programs
- Guide to use the programs
Editing Ripped Internet Streams
- Suitable programs
- Rules for editing digital music files
Preparation Finish
- Preparing uploads...
