在0.7.5.4710版本中, MediaCoder新增了将视频采集设备作为一个任务的功能，换句话说，现在可以简单快捷地将摄像头或者其它DirectShow视频采集设备的画面用MediaCoder直接编码了。点击“添加”按钮即可看到一个新的“添加视频采集设备”的选项。 Read the rest of this entry »
MediaCoder 0.7.5 released with parallelized transcoding support
Finally we can have multiple files processed simultaneously in MediaCoder with the new job-level parallelization support. Those who have a processor with 8 or 16 cores can now unleash the power of their processor. As MediaCoder is not just a simple GUI front-end which only invokes a command line encoder wait sits there waiting for the encoder to complete, instead it distribute frame data and the audio samples from decoders to encoders, the job-level parallelization is not that easy to add from the old design. In order to add this feature, large amount of the code has been rewritten. Finally it works after several weeks’ efforts, though it might still be experimental for a while. The number of the maximum parallelized jobs is limited to 4 at the moment. So feedbacks welcomed!
MediaCoder iPod专用版新增对iPad视频格式的支持
最新的MediaCoder iPod专用版包含了iPad视频配置。该版本的64位版也同时发布。
iPad支持的视频格式
* H.264视频最高720p, 每秒30帧, Main Profile level 3.1, 音频为AAC-LC音频最高160 Kbps, 48kHz, 以mp4或者.mov格式封装;
* MPEG-4视频最高码率2.5 Mbps, 最高640×480分辨率 pixels, 每秒30帧, Simple Profile, 音频为AAC-LC音频最高160 Kbps, 48kHz, 以mp4或者.mov格式封装
* Motion JPEG (M-JPEG) 最高35 Mbps, 最高1280×720分辨率, 每秒30帧, 音频为ulaw, PCM音频, 以avi格式封装