MediaCoder 0.8.32 released with multiple-pass H.265 encoding (Stanley posted on September 19th, 2014 )

In this release, 2-pass and 3-pass H.265 encoding have been added, and not many changes besides some routine update of codecs and minor bug fix. Anyway I know many people are demanding for the multiple-pass H.265 encoding. ;-)

As always, head for the download page for the latest version.

MediaCoder User Distribution Around the Globe (Stanley posted on August 21st, 2014 )

It’s been a while since last update on the blog, though updates for MediaCoder are released from time to time. Thinking it might be good to know about where our users are from, I extracted some data from Google Analytics which can reflect the geographical distribution of active users of MediaCoder (not number of installations) in the past 3 months. Here comes the data.

mcusermap
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MediaCoder SVE technology now works with H.265 (Stanley posted on February 17th, 2014 )

MediaCoder’s Segmental Video Encoding (SVE) is now working with H.265/HEVC encoding. SVE is a unique techonology in MediaCoder designed to improve the parallelism of those encoders unable to consume 100% CPU power due to the lack of or non-optimal multi-threading implementation. By observation, x265, the H.265/HEVC encoder used in MediaCoder, is not utilizing 100% CPU power on a quad-core i7 processor. That’s when SVE becomes effective in boosting the encoding. Another importance of working SVE with H.265 is that it is the fundamental of future distributive encoding of H.265.

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MediaCoder H.265/HEVC encoding beta testing (Stanley posted on February 13th, 2014 )

MediaCoder H.265 encoding is open for beta testing. For users who want to involve in the beta testing, please download the update package (both x86 and x64) and apply it on the installation of latest MediaCoder 0.8.28. If you haven’t installed MediaCoder or your MediaCoder is out-dated, please go here to download the latest MediaCoder full installer and install MediaCoder with it before applying the update.

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H.265 encoding in MediaCoder, very soon! (Stanley posted on February 9th, 2014 )

I have been working on adding H.265 encoding support to MediaCoder. Today, everything finally gets to work. I encoded a sample video clip (H.265/HE-AAC-V2/MP4, 1280×720 @ 512Kbps). The visual quality is quite amazing. Right click the link (browser can’t play it), “Save As” to download it, and play with latest VLC.

MediaCoder_h265_demo_720p_512kbps.mp4

h265_720p_screenshot
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MediaCoder 0.8.28 is released and a happy holiday! (Stanley posted on December 20th, 2013 )

MediaCoder 0.8.28 is just released. This version added support for VP9 encoding. Though the vpxenc is slow encoding VP9 with almost no multi-threading implementation (unlike VP8 encoding), MediaCoder’s Segmental Video Encoding backs it up. With SVE enabled, the VP9 encoding speed boosts by times, though still low comparing to x264.

Several other tools have been updated. An x64 build of MP4Box is included in 64-bit distribution. Several minor bugs got fixed. For GPU encoding, I fine tuned the pre-processing filtering parameters to eliminate some side effect I witnessed myself.

For more info about the new release, just head for the changelog.

Finally, I wish a happy holiday to all of my users! It’s been almost 9 years since the very first spark and I have never stopped working on it. MediaCoder has served millions of people I believe. Thinking about all these, I feel my time and efforts spent throughout the years all worth it.

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Splitting re-implemented in MediaCoder 0.8.25 (Stanley posted on August 14th, 2013 )

The splitting function finally comes back. There is no more “Split” mode. To enable splitting, simply go to Time tab for the splitting options (by time and by number of segments). The splitting operation is performed on-the-fly while transcoding is proceeding, so it’s fast.

mc_5550_splitting

There are still some limitations though. Splitting currently does not work with multi-pass encoding and segmental encoding (SVE). The file relocation options are not working when splitting is enabled. These will be improved soon later.

 

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Release notes for MediaCoder 0.8.22 (Stanley posted on May 22nd, 2013 )

I am so excited to release this new version as a new exciting technology named Segmental Video Encoding (SVE) was introduced in after a long time of thinking and implementation.

The idea of SVE is straight-forward. On systems with a lot of processor cores or processors, a single instance of video encoding cannot utilize all the computation power of the systems, though modern encoders like x264 already has good support for multi-threading. This also happens when doing GPU-based encoding, whereas the GPU is quite often under-loaded. SVE is basically the mechansim of encoding of a video in temporal segmentations, by loading 1~2 minutes video frames into memory and dispatch the frames to multiple encoder instances. A series of encoded video segments will be generated and they are concatenated seamlessly in the muxing stage together with the audio. This improves paralellization regardless of the encoder’s support for multi-threading, so those encoders without good multi-threading implementation (Xvidcore, MPEG 1/2 encoder etc.) will benefit. Please be noted that SVE is still experimental.

If you experience problem with it, please report to me in the forum. I also need some more testings on cutting-edge computer systems which I don’t have a chance to test on.

mc_segmental

MediaCoder working with Segmental Video Encoding technology

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