After one month’s continuous efforts, I am pleased to announce the release of MediaCoder 2011 RC1. Although this is not yet the final release version of MediaCoder 2011, it has most of the new features and improvements of the new version as well as a new look.
There is few news on this blog in recent months. But it does not mean that I am not working. After finishing my wedding in December 2010, I have kept working on the next major release of MediaCoder. There are several new exciting features I must mention here before the release.
The next release to be versioned as MediaCoder 2011 will hopefully be released before the Chinese new year (early Feb). So stay tuned!
这两个月一直在忙于MediaCoder 2011的开发。新版本会包含很多新特性，在这先透露一些：
如果进展顺利，MediaCoder 2011会在农历新年前发布，请大家保持关注。
Verbatim, whose business is memory (and whose name means “to reproduce word for word,” by the way) has done a Rick Moranis job on its MediaShare NAS, resulting in the MediaShare Mini. One third the size of its predecessor, this guy retains its slight stature by going the Iomega iConnect route of eschewing on-board storage altogether for four USB ports (so it looks like you’ll have to factor the four thumb drives into the purchase price). And like the full-size MediaShare NAS server, this bad boy supports remote access via HTTP, support for a number of handhelds (including the iPhone, iPod Touch, iPad, BlackBerry, Android, and Palm Pre), Facebook integration, DLNA-compliant media streaming, and more. Look for it now for an MSRP of $90. Read the rest of this entry >>
Recently x264 has added 10-bit depth encoding and MediaCoder is keeping up with this new feature. In latest build 4777, new options of x264 have been added, including the High10 profile and 10-bit encoding. With 10-bit depth, video quality can be better at the same bitrate than encoding with common 8-bit depth. However, not all players/decoders support 10-bit depth. As far as I know, VLC can handle 10-bit depth.
Besides, MediaCoder is able to feed frames to encoders in color space of I422, YUY2 and RGB as well as common I420/YV12.最新版本的MediaCoder增加了10位色深的H.264编码，相比8传统的8位色深编码，10位色深编码可以在相同码率下带来更好的画质，不过目前只有少数几种播放器支持，VLC是其中之一。
MediaCoder build 4755 has added two audio volume related features:
Calculated ReplayGain value
The highest-quality method to encode and deliver a 3D video program is to store and deliver it as a dual-stream synchronized video program, with one full-quality video stream for each eye. This is how Blu-ray 3D works, storing the video for each eye as a full “Blu-ray quality” video program.
The HDMI 1.4 specification provides for 3D stereoscopic video to be delivered in several different ways, including over/under-formatted frames that are 1920 pixels wide and 2205 pixels high. The frame for the left eye and right eye are delivered together, to assure that synchronization is always maintained, even if the signal is momentarily lost and then restored.
通过双视频流存储和传输同步的视频节目内容是最高质量的对3D视频节目进行编码和传送的方法。这种为每个人眼提供全质量视频流的方法，正式蓝光3D所使用的方法。HDMI 1.4规范针对3D立体视频提供了几种不同的传输方式，包括1920像素宽、2205像素高的上下帧方式，这种方式左眼和右眼看到的帧一起被传输，以保证两者始终是同步的，即使信号暂时丢失然后恢复也不受影响。
MediaCoder 0.7.5.4740 was just released. In this version, there is a new feature which is called automatic resolution adjustment which is useful for retaining aspect ratio without applying cropping or expanding. In addition, the preview picture now has correct aspect ratio. Check out the changelog for more details.
MediaCoder 0.7.5.4740完整版发布，新增分辨率自动调整功能，新增帧率只降不升一级分辨率只缩小不扩大的选项，修正了预览画面的宽高比问题。这次同步更新了MediaCoder iPod/iPhone/iPad版。64位版本稍后更新。
Today MediaCoder has been tested with Intel Concurrency Checker, as was invited by Intel Software Partner Program. According to the reports sent back by Intel, the Computed Scaling value of MediaCoder is 2.6 and 3.71 for without and with task parallelization respectively, which reaches and surpasses the suggested minimum value for 8-core processors.
Some H.264 stream in MKV container is already iPhone or iPad playable. In such case, we only need to convert the audio format and remux the video stream with converted audio stream into MP4 container in order to let iPhone or iPad play it. This can save us significant amount of time for transcoding.
现在很多网上下载的MKV文件的视频流已经是可以直接被iPhone或者iPad解码的，在这种情况下要把文件转换为iPhone或者iPad可以播放的MP4文件就没有必要转换视频部分，只要将音频部分转码，然后和原始的视频流混合成iPhone/iPad支持的MP4格式即可。