i.MX_6_Series_Yocto_Project_Multimedia_Release_Notes

1BSP Requirements

?Hardware requirements:

?i.MX 6DualLite/6Quad SABRE-SD board/platform

?i.MX 6DualLite /6Quad SABRE-AI board ?i.MX 6SoloLite EVK board ?Software requirements:

?Board Support Package (BSP):i.MX Linux BSP version L3.10.17

?Gstreamer:

?gstreamer (version 0.10.36)

?gstreamer-plugins-base (version 0.10.36)?gstreamer-plugins-good (version 0.10.31)

2What's New

?Improved VPU plugins (decoder and encoder)compatibility with open source plugins.?

Bugs fixed and robustness enhanced.

Release Notes

Rev L3.10.17_1.0.0-ga, 05/2014

i.MX 6 Series Yocto Project Multimedia Release Notes

? 2014 Freescale Semiconductor, Inc.

Contents

1BSP Requirements....................................................12What's New................................................................13Release Contents.......................................................24Freescale GStreamer Plugins (25)

Multimedia Feature Matrix........................................35.1Parser/Demuxer specifications.......................35.2Video codec specification for i.MX

6Quad/6DualLite............................................45.3Video codec specification for i.MX

6SoloLite........................................................45.4Audio codec specification..............................55.5Image codec specification..............................65.6Speech codec specification............................65.7Streaming protocol

specification...................................................75.8

RTSP streaming server

specification (7)

6Documentation...........................................................87Known Issues and Limitations..................................88Note (89)

Getting Technical Support (8)

NOTE

?To support WMA, WMV, AAC+, AC3, DD+ decoding, and WMA encoding,

special and excluded packages need to be installed.

?The vpudec and vpuenc plugins are only for SoCs with VPU hardware.

?mfw_isink is unavailable with the SoCs with PXP.

?mfw_v4lsink does not support resizing and rotation in the SoCs with PXP.

?glimagesink is only available for those SoCs with GPU 3D.

5Multimedia Feature Matrix

This section provides feature matrix details of various codecs used for play back.

5.1Parser/Demuxer specifications

NOTE

The demuxer support of a certain audio or video type does not necessarily mean that it

can be played. This depends on the availability of the codec.

5.2Video codec specification for i.MX 6Quad/6DualLite

5.3Video codec specification for i.MX 6SoloLite

5.4Audio codec specification

NOTE

?The bitrate (bps) supported for MP3 encoder: 32k, 48k, 56k, 64k, 80k, 96k, 112k,

128k, 160k, 192k, 224k, 256k, 320k

?The sample and supported bitrate (bps) combinations for WMA8 encoder:

?For mono output:

?22050 Hz: 20k, 16k, 22k, 17.6k

?32000 Hz: 20k, 22k

?44100 Hz: 32k, 35.2k, 48k, 52.8k

?For Stereo output:

?22050 Hz: 35.2k, 32k, 22k, 20k

?32000 Hz: 52.8k, 48k, 44k, 40k, 35.2k, 32k

?44100 Hz: 211.2k, 192k, 176k, 160k, 140.8k, 128k, 105.6k, 96k, 88k,

80k, 70.4k, 64k

?48000 Hz: 211.2k, 192k, 176k, 160k, 140.8k, 128k

5.5Image codec specification

5.6Speech codec specification

5.7Streaming protocol specification

5.8RTSP streaming server specification

NOTE

To support the RTSP server, the gst-rtsp-server open source package needs to be

installed. You can follow Section “RTSP Streaming Server” in the i.MX 6 Series Yocto

Multimedia User’s Guide for how to build and install it.

7Known Issues and Limitations

?As the maximum buffer size of the playbin2 multi-queue is 2 MB, it may cause problems for some long audio or video interleaved streams. You can enlarge this buffer size to support special cases.

?

The rotation is not supported for interlaced stream whose width or height is larger than 968x968 due to driver limitation.

?The rotation is not supported for the display resolution larger than 1024x1024 due to driver limitation.?v4lsrc plug-in does not support rotation.

?AAC decoder: The ADIF format does not support seek mode.

?Play recorded AVI file (MPEG4(vpu) + AVI(avimux)) failed as the AVIMUX mark MPEG4 video to DIVX is not supported.

?For video file which contains multiple audio tracks, the default selected audio track may be different for each playback due to playbin2 implementation.

?Downmix multichannel audio may have problem (such as different volumes of left and right channels if downmix to 2channels) as the ALSA-lib downmix algorithm will do downmixing with the default channel layout settings. You can configure asound.conf to change the layout settings.

8Note

?In dual-display use case, if the primary and secondary displays do not have the same resolution, the secondary display shows the color strip. To solve this issue, the mfw_v4lsink property of the secondary display needs to be set with the actual width and height in the command line.

?The accurate seek mode may have a longer time delay.

?Because the stream container does not have the index table, seek is not supported.?Fast rewind of audio only streams is not supported.

9Getting Technical Support

If you have any questions or problems concerning this release, contact your Freescale representative, specifying the release version, board version, BSP version, and any other relevant information.

Document Number: IMX6YMMRN Rev. L3.10.17_1.0.0-ga

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