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| author | Matthias P. Braendli <matthias.braendli@mpb.li> | 2015-04-23 14:58:52 +0200 |
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| committer | Matthias P. Braendli <matthias.braendli@mpb.li> | 2015-04-23 14:58:52 +0200 |
| commit | 0ba5cb947a8eeb24598c529832ea6dd3504667da (patch) | |
| tree | 6e30aa21b637c541d17ec61d834c91535187a698 | |
| parent | 2edb4206d9e8d21d67ecd9ad038bd2252eff8ee8 (diff) | |
| download | ODR-AudioEnc-0ba5cb947a8eeb24598c529832ea6dd3504667da.tar.gz ODR-AudioEnc-0ba5cb947a8eeb24598c529832ea6dd3504667da.tar.bz2 ODR-AudioEnc-0ba5cb947a8eeb24598c529832ea6dd3504667da.zip | |
Update README
| -rw-r--r-- | README.md | 23 |
1 files changed, 21 insertions, 2 deletions
@@ -37,7 +37,7 @@ How to build Requirements: * boost-thread and boost-system -* ImageMagick magickwand (for MOT slideshow) +* ImageMagick magickwand (optional, for MOT slideshow) * The alsa libraries (libasound2) * Download and install libfec from https://github.com/Opendigitalradio/ka9q-fec * Download and install ZeroMQ from http://download.zeromq.org/zeromq-4.0.4.tar.gz @@ -189,14 +189,24 @@ Usage of MOT Slideshow and DLS data for the encoder. This is communicated through a fifo to the encoder. It also reads DLS from a file, and includes this information in the PAD. +If ImageMagick is available +--------------------------- It can read all file formats supported by ImageMagick, and by default resizes them to 320x240 pixels, and compresses them as JPEG. If the input file is already a JPEG file of the correct size, and smaller than 50kB, it is sent without further compression. If the input file is a PNG that satisfies the same criteria, it is transmitted as PNG without any recompression. +RAW Format +---------- +If ImageMagick is not available, or when enable with the -R option, the images +are not modified, and are transmitted as-is. Use this if you can guarantee that +the generated files are smaller than 50kB and exactly 320x240 pixels. + +Supported Encoders +------------------ *dabplus-enc* can insert the PAD data from mot-encoder into the bitstream. -The mp2 encoder [toolame-dab](https://github.com/Opendigitalradio/toolame-dab) +The mp2 encoder [Toolame-DAB](https://github.com/Opendigitalradio/toolame-dab) can also read *mot-encoder* data. This is an ongoing development. Make sure you use the same pad length option @@ -204,6 +214,15 @@ for *mot-encoder* and the audio encoder. Only some pad lengths are supported, please see *mot-encoder*'s help. Only pad lengths 34, 42 and 58 seem to be working with some receivers, 23 and 26 appear to be broken. +Character Sets +-------------- +When *mot-encoder* is launched with the default character set encoding, it assumes +that the DLS text in the file is encoded in UTF-8, and will convert it according to +the DAB standard. + +If you set the character set encoding to anything else, *mot-encoder* will not perform +any conversion, and it is your responsibility to ensure the encoding is valid. + Known Limitations ----------------- *mot-encoder* encodes slides in a 10 second interval, which is not linked |