This is a generic script which flashes a Linux System (U-boot, uImage and root filesystem) into a SD card. Steps:     1. Download the script into a Linux system     2. Make the script executable (chmod +x mk_mx_sd)     3. Run it with '-H' to know its usage.     4. Run the script with real parameters, specifying the paths for U-boot, uImage and the root filesystem as seen above     5. Plug the SD into your target, boot the board and change the corresponding U-boot variables $ IMAGE=/data/BSP/L2.6.35_11.09.01_ER/L2.6.35_11.09.01_ER_images_MX5X $ ./mk_mx_sd  -d /dev/sdc \                       -u $IMAGE/u-boot-mx53-loco.bin \                       -k $IMAGE/uImage \                       -r $IMAGE/rootfs     6. In case you only want to flash a single binary (like U-boot), just specify the U-boot parameter (-u)

This link contains the scripts, U-boot commands, and patch code shown on the application note AN5409 titled 'i.MX6 Dual/6 Quad Power Consumption Measurement'.

In FSL i.MX53 reference design, it is configured as: static struct mxc_audio_platform_data sgtl5000_data = { .ssi_num = 1, .src_port = 2, .ext_port = 5, .hp_irq = gpio_to_irq(HEADPHONE_DEC_B), .hp_status = headphone_det_status, .init = mxc_sgtl5000_init, .ext_ram_rx = 1, }; by default. If change the configuration to be : static struct mxc_audio_platform_data sgtl5000_data = { .ssi_num = 0, .src_port = 1, .ext_port = 5, .hp_irq = gpio_to_irq(HEADPHONE_DEC_B), .hp_status = headphone_det_status, .init = mxc_sgtl5000_init, .ext_ram_rx = 1, }; There will prompt "imx_ssi_irq mxc_ssi SISR 8003a3 SIER 180100 fifo_errs=XXXX"  constantly, and audio is greatly distorted. The root cause of this issue is that SSI1/3 use SDMA, and also use IPMUX, but there is not the clock dependency between SDMA and IPMUX, so sometimes IPMUX clock is closed automatically. The attached patch may fix this issue. NOTE: If use SSI2 .ssi_num = 1,             .src_port = 2, If use SSI1 .ssi_num = 0,             .src_port = 1,

Introduction The SABRE Board for Smart Devices Based on the i.MX 6 Series is an evalutaion board featuring the i.MX6 Quad Core Cortex-A9 processor. Freescale ported the Linux Operating System (as of this writing version 3.0.35) and the Board Support Package (BSP) containing the Linux Kernel, build system called LTIB, GCC compiler tools, boot loader, u-boot, and root file system is available for download, install, and build. LTIB is a perl script and is the acroynm for Linux Target Image Builder. This document describes setting up a CentOS 6.3 64-bit host in a virtual machine for using the BSP and running the images on i.MX6Q-SDB evaluation board. References Description Reference CentOS 6.3 LiveCD installed in a virtual machine from virtual box. http://centos.org CentOS-6.3-x86_64-LiveCD.iso 9953ff1cc2ef31da89a0e1f993ee6335 Virtual Box - A Virtual Machine used for creating the CentOS host. Virtual Box installed on Windows 7 64-bit Pro, then create the VM. Allocated 20 GB Hard disk and 1 MB RAM. The steps for installations are found at the virtual box web site. http://www.virtualbox.org The BSP provides, a build system called ltib, GNU tools, U-Boot, Linux Kernel, and root file system: Download archive from http://freescale.com/sabresdb L3.0.35_12.09.01.0_GA_source.tar.gz 5ab4198278e92e03be74ca602227afad Document Conventions Bold lines are Linux commands and edits run on CentOS. The '$' indicates running the command as a regular user The '#' indicates running the command as root user. CentOS Host Setup For this example a virtual machine is used, however a dedicated PC running only CentOS linux could be used. 1. Add user login to sudo'ers file           Login as user root and run the visudo command          # visudo           Add the following line and save the file:           user     ALL=(ALL)     ALL 2. Update the system packages:           $ sudo yum udpate 3. Install package for "ltib" operations:           $ sudo yum install make gcc gcc-c++ kernel-devel bison libuuid-devel ncurses-devel zlib-devel lzo-devel intltool libtool tcl rpm-build perl-ExtUtils-MakeMaker ld-linux.so.2 zlib-1.2.3-27.el6.i686 4. Update sudo'ers file for supporting ltib rpm           $ sudo visudo           Add the following line and save the file:           user     ALL=NOPASSWD: /bin/rpm,/opt/freescale/ltib/usr/bin/rpm Install BSP The sources are in a tar gziped archive file which is downloaded from http://freescale.com/sabresdb, selecting the Software & Tools tab then expanding Run-time Software in the middle of the page. A free login is required for download which can be registered for by selecting the Login at the top right of the freescale.com page. Once downloaded, verify the md5 checksum (see references above for the value). $ mkdir ~/imx6 $ tar -zxf L3.0.35_12.09.01.01_GA_source.tar.gz -C ~/imx6 $ cd ~/imx6/*source $ ./install Read and accept the licensing information. Choose a directory to install too, for this example entered .. which is the parent directory. Build the i.MX6Q SDB $ cd ~/imx6/ltib $ ./ltib After some time (depends on how fast your host computer is) the menuing system is shown which allows you to select build configurations. The second screen selects the development platform which is imx6q for the SDB. For this example the Min profile is chosen which is the default. Use the arrow keys to move and the enter key to select. The space bar selects/deselects an entry. Use the right arrow key to move to <Exit> and press the enter key. The save dialog box is presented, save. The next menu is the iMX6x Base Boards which leaving all as default except for the U-boot board selection which is mx6q_sabresd for the SDB. Save and exit. Images When ltib completes, the images are found in <ltib>/rootfs/boot. Bootloader = u-boot.bin Linux Kernel = uImage File system = </ltib>/rootfs

prebuilt image: image_imx-android-13.4.1_6qsabresd u-boot variables: bootcmd=booti mmc2 bootargs=console=ttymxc0,115200 init=/init androidboot.console=ttymxc0 video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24

When flashing a Linux System on a SD card using the script mk_mx28_sd on a Ubuntu 12.04 host, one needs to modify it so partitions are created correctly.  Just follow these steps on the console: $ cd $SDK/L2.6.35_10.12.01_SDK_scripts $ cat > first_partition_sector.patch << EOF diff -Naur a/mk_mx28_sd b/mk_mx28_sd --- a/mk_mx28_sd        2010-10-06 09:47:42.000000000 -0500 +++ b/mk_mx28_sd        2012-11-30 13:38:34.508199154 -0600 @@ -178,7 +178,7 @@ n p 1 -1 +2048 +32M t b EOF $ patch -p1 < first_partition_sector.patch then, you can run the mk_mx28_sd command again with the device as parameter                $ cd $LIB $ export PATH=$PATH:$SDK/L2.6.35_10.12.01_SDK_scripts $ mk_mx28_sd /dev/$SDX

Join FSL-community-bsp project: https://lists.yoctoproject.org/listinfo/meta-freescale In order to test Yocto Project for i.MX6 or any other supported board please follow the instructions pointed by FSL Community BSP. In order to download the source code, please follow this instructions FSL Community BSP. With the downloaded source code, you can follow the steps from this training: Yocto Training - HOME If you face a problem, please, send an email to https://lists.yoctoproject.org/listinfo/meta-freescale This page made sense when there was not other tutorial to point people on how to download and build the very first image using Yocto Project tools for i.MX family boards. Today, FSL Community BSP has become a complete environment with its own landing page (FSL Community BSP) and a collaborative community around meta-freescale mailing list. I encourage you to register in meta-freescale mailing list. I configured this document to be closed for new comments. In case of any issue or bug, please, send an email to meta-freescale.

File related to the following question: MX53 u-boot Splash Screen support

Test digital zoom with ipu for camera preview.   Board :sarbre-sd (imx6dq) BSP   : android 13.4ga In the above flow, one frame buffer is processed in four steps at camera preview. Add the step to change the frame buffer before step 4 , the added step which  zoom one preview frame.   The figure below shows the crop function of ipu lib, we use this function scale the frame.   Test result: preview zoom levle 0:   preview zoom level max:     When taking pictures with 5M pixels and the zoom is over level 1, the picture size is not 2592x1944 but 2016x1512. The underlying reason for it is that ipu crop function only supports the 2048x2048 maximum output .   Thumbnails of test result :  

HDMI Dongle SW: The attachment is an HDMI dongle patch based on R13.4 GA. The patches include r13.4-ga-add-on-patches. You can patch it after applying R13.4 GA patch such as add-on patches. You can run script to revb_dongle_patch_install.sh to apply these patches. How to apply the hdmidongle_REVB_R13.4_patch-20121115.tgz: 1. Suppose your android source top is ~/myandroid 2. tar zfvx hdmidongle_REVB_R13.4_patch-20121115.tgz -C ~/ 3. copy revb_dongle_patch_install.sh to ~/ 4. cd hdmidongle_REVB_R13.4_patch 5. ~/revb_dongle_patch_install.sh 6. The  revb_dongle_patch_install.sh will take ~/myandroid as default directory to do patch 7. If your android source tree top is not ~/myandroid. For example, ~/myandroid_ICS, please run ~/revb_dongle_patch_install.sh ~/myandroid_ICS   The following is the release notes for  hdmidongle_REVB_R13.4_patch-20130118.tgz 1. New features:    a. uboot fastboot    b. ldo bypass    c. ntfs support    d. bluetooth A2DP   2. Bug fix    a. WifiDirect connect issue    b. realtek throughput issue with TPLink AP   3. File list:    README.TXT                                      --- this file    0001-uboot_fastboot.patch                       --- uboot fastboot  patch    0002-LDOBYPASS.patch                            --- enable ldo bypass  patch    0003-WifiDirect.patch                           --- wifi direct connect patch    0004-ntfs_support.patch                         --- ntfs support patch    0005-BT_enable.patch                            --- enable bluetooth A2DP    0006-1G_boot_stable.patch                       --- make 1G bootup stable    ntfs-3g.tar.gz                                  --- open source ntfs-3g for ntfs support    rtl8192ce_v4.0.0_6239.20121226_TPIOT1.tgz       --- realtek new driver for TPLink AP throughput issue    MD5SUM.TXT                                      --- md5 check sum   4. Patch guide    Please run md5sum -c MD5SUM.TXT first to confirm all the files received are ok.    All these patches are based on the patch release hdmidongle_REVB_R13.4_patch-20121115.tgz    You need to do as following: R13.4 GA--->patch hdmidongle_REVB_R13.4_patch-20121115.tgz --> patch hdmidongle_REVB_R13.4_patch-20130118.tgz    Supposed the ~/myandroid is your top directory of the android source tree.    Please run the following command to apply the patches .    $tar zfvx hdmidongle_REVB_R13.4_patch-20130118.tgz -C ~/    $cd ~/myandroid    $git apply  ~/hdmidongle_REVB_R13.4_patch-20130118/0001-uboot_fastboot.patch --verbose    $git apply  ~/hdmidongle_REVB_R13.4_patch-20130118/0002-LDOBYPASS.patch --verbose    $git apply  ~/hdmidongle_REVB_R13.4_patch-20130118/0003-WifiDirect.patch --verbose    $git apply  ~/hdmidongle_REVB_R13.4_patch-20130118/0004-ntfs_support.patch --verbose    $git apply  ~/hdmidongle_REVB_R13.4_patch-20130118/0005-BT_enable.patch --verbose    $git apply  ~/hdmidongle_REVB_R13.4_patch-20130118/0006-1G_boot_stable.patch --verbose    $rm -rf kernel_imx/drivers/net/wireless/rtl8192ce    $tar zfvx ~/hdmidongle_REVB_R13.4_patch-20130118/rtl8192ce_v4.0.0_6239.20121226_TPIOT1.tgz    $tar zfvx ~/hdmidongle_REVB_R13.4_patch-20130118/ntfs-3g.tar.gz -C external   5. Build and run     new patch 0007-battery_always_full.patch:   Some games check the battery capacity to determine, it could run or not. But on the hdmi dongle we have no real battery, it makes some games can not run on the hdmi dongle.  We enable the fake battery let the andorid feel it has battery and it is 100% full. 1. Please use this patch after patch hdmidongle_REVB_R13.4_patch-20130118.tgz 2. suppose your android top directory is ~/myandroid and you put he 0007-battery_always_full.patch in your home directory ~ 3. cd ~/myandroid 4. git apply --verbose ~/0007-battery_always_full.patch 5. please rebuild bootimage and run   patch   0008-boot_unlock_screen.patch: When bootup, it goes into desktop rather than screen locker.   1. suppose your android top directory is ~/myandroid and you put the 0008-boot_unlock_screen.patch in your home directory ~ 2. cd ~/myandroid 3. git apply --verbose ~/0008-boot_unlock_screen.patch 4. please rebuild systemtimage and run 2. cd ~/myandroid 3. git apply --verbose ~/0008-boot_unlock_screen.patch patch 0009-uboot-enable-mmu-fix.patch: This patch is for some issue in mmu enable. It will improve all the modules in uboot.   1. suppose your android top directory is ~/myandroid and you put the 0009-uboot-enable-mmu-fix.patch in your home directory ~ 2. cd ~/myandroid 3. git apply --verbose ~/0009-uboot-enable-mmu-fix.patch 4. please rebuild uboot  and rub     patch tarball   hdmidongle_REVB_R13.4_patch-20130123.tgz:   hdmidongle_REVB_R13.4_patch-20130123.tgz contains 0007-battery_always_full.patch  0008-boot_unlock_screen.patch 0009-uboot-enable-mmu-fix.patch remove attached files here: 0007-battery_always_full.patch  0008-boot_unlock_screen.patch 0009-uboot-enable-mmu-fix.patch     Remove hdmidongle_REVB_R13.4_patch-20130123.tgz, hdmidongle_REVB_R13.4_patch-20130118.tgz and upload hdmidongle_REVB_R13.4_patch-20130124.tgz   hdmidongle_REVB_R13.4_patch-20130124.tgz  contains all patches in hdmidongle_REVB_R13.4_patch-20130123.tgz, hdmidongle_REVB_R13.4_patch-20130118.tgz. Please use the  hdmidongle_REVB_R13.4_patch-20130124.tgz.   hdmidongle_REVB_R13.4_patch-20130131.tgz: Besides all the patches released before. Three more patches are added in this patch tar ball.     0010-boot_disable_screenlocker.patch                     --- For fix  0008-boot_unlock_screen.patch 0011-wm8326-DC_CONTROL_RATE.patch                        --- Change the wm8326 pmic rate to immediate voltage change 0012-Added-default-video-mode-check-make-sur.patch       --- Video mode check   hdmidongle_REVB_R13.4_patch-20130201.tgz:   Just change the readme  to place emphasis on   the 0006-1G_boot_stable.patch reverse   Reverse patch 0008-boot_unlock_screen.patch and 0006-1G_boot_stable.patch   0008-boot_unlock_screen.patch: it has some problem but doesn't do any harm to the hdmi dongle.                                                  Please use 0010-boot_disable_screenlocker.patch, instead. 0006-1G_boot_stable.patch:  The patch take more cpu delay to adapt the pmic, we change the pmic setting                                             in  0010-boot_disable_screenlocker.patch. This patch is no needed. And it will lower                                            the performance. Please reverse it.                                            cd ~/myandroid                                            git apply --verbose ~/0006-1G_boot_stable.patch                                                                                           hdmidongle_REVB_R13.4_patch-20130221.tgz: There are three important fixes include in this release. They make the dongle stable. 1. lowmem killer issue fix 2. Update realtek wifi driver to fix the soft ap issue 3. Wifi p2p framework fix to resovle wifi direct only one side work issue   Please read the README.TXT for detail and the other changes.   hdmidongle_REVB_R13.4_patch-20130308.tgz: This patch tar ball include all the patches in hdmidongle_REVB_R13.4_patch-20130221.tgz. Besides, it has a new patches 0020-DL_WifiDirect_Concunrrent_crash_fix.patch to fix the crash issue on DL board.   HDMI Dongle HW:   HDMI Dongle schematic, pcb, gerber and BOM have been attached, the detailed hardware feature has been list below:   Android 4.x HDMI Dongle SPECIFICATION Core Configure Operating System Android 4.x Operating System Based on Micro-PC Platform CPU Processor Freescale i.MX6x DualLite/Quad Core DRAM Storage DDR3 1GigaByte Size, Data rate 1066MT/s Flash Storage 4GigaByte NAND flash ROM Power System Power Supply DC JACK / Micro USB : 5V/2A LED Status Green: Power ON; Red: System Run Socket/Connector MicroSD Socket SDXC Support, Up to 32GB size USB HOST 2.0 USB 2.0 HOST Support USB OTG 2.0 USB 2.0 OTG Support Display/Audio HDMI Output HDMI TypeA Plug connector, 1080p@60Hz output Video Decoder Support Variety of Video Format: MPEG4/H.263/H.264/MJPEG/Xvid/VC-1/WMV/MPEG2/VP8... Audio Decoder Support Variety of Audio Format: MP3/AAC/LPCM/FLAC/AMR/AC3/WMA/Vorbis GPU Support GC2000 GPU core,2D/3D engine support,OpenGL support Wireless Network WiFi Network IEEE 802.11b/g/n,Up to 300Mbps,AP/P2P/Sta Mode Support Others Key Recovery key support RevB2     OTT TV BOX LINK: https://community.freescale.com/docs/DOC-94561   JB4.2 patches link : Patches for HDMI Dongle JB4.2.2_1.0.0-GA Release

This describes how to perform frequency measurements of an external signal by using the Camera Sensor Interface (CSI) of an i.MX21/25/35 processor. Principle: A way to measure the frequency of a digital signal is to count the number of received rising or falling edges during a known amount of time. The CSI embeds a 16-bit frame counter. When programmed in non-gated clock mode, this counter increases at any rising edge on the VSYNC signal. Other signals of this interface could be ignored such: MCLK, PIXEL_CLK, HSYNC, DATA. Software example for the i.MX25: void CSI_init(void){       unsigned int tmp_value = 0;       /* It assumes that the VSYNC I/O is set to CSI mode */       /* Disable IPG_PER_CSI to save power consumption */       *((unsigned int *) CCM_CGR0) &= ~(0x1<<0);       /* HCLK_CSI and IPG_CLK_CSI should be enabled. */       *((unsigned int *) CCM_CGR0) |= (0x1<<18);       *((unsigned int *) CCM_CGR1) |= (0x1<<4);       /* Configuration of CSI_CSICR1 in non-gated clock mode */       tmp_value = 0;       tmp_value |= (1<<8);    // sync FIFO clear       tmp_value |= (1<<30);   // ext vsync enable       *((unsigned int *) CSI_CSICR1) = tmp_value;       // Reset frame counter       *((unsigned int *) CSI_CSICR3) |= (1<<15); } Then, every T seconds, the software has to read the register CSI_CSICR3. The 16-bit size field from bit 16 shows the current value of the frame counter (FRMCNT). This regular or irregular read could be done based on a GPT to have a known time reference. It is easy to calculate the frequency of the signal: Frequency = FRMCNT / T (Hz). At any time, the frame counter can be reset thanks to the bit 15 of the register CSI_CSICR3. NOTES: MCLK does not need to be enabled. The input frequency should not be higher than what can electrically support the VSYNC input. Please, refer to each i.MX datasheet for more information.

This is a HW design checklist for customer's reference. Please read and fill it in carefully before requesting a schematic review. Rev3.1 @2016.10.19 -- 1. Add i.MX6DQP related contents.

Freescale's PF0100 PMIC should have VDDIO power tied to the same supply as the associated I2C supply on MX6. There is a momentary on-chip sneak path on power-up if VDDIO is wired per the i.MX6 SABRE-AI automotive development platform. As a result, I2C power rail P3V3_DELAYED rises prematurely due to backfeed from P3V3 through the I2C port. Note that on SABRE-AI, P3V3 powers up before P3V3_DELAYED. Existing SABRE-AI design: PF0100 VDDIO is wired to P3V3. Corrective action for mass production: Wire PF0100 VDDIO to P3V3_DELAYED; same supply as the associated I2C supplies on MX6 (NVCC_EIM0 and NVCC_GPIO). Laboratory results attached.

A simple Linux kernel module to react on GPIO-generated interrupts

Getting started with Linux on the i.MX53QSB

(DEPRECATED. Please check this document for Real Time Streaming) A server can be streaming video and a client, in this case a i.MX6 target, is receiving and decoding it. For example, a server with GStreamer and a web camera connected, can be streaming with the following command: $ # Pipeline 1 $ gst-launch v4l2src ! 'video/x-raw-yuv, format=(fourcc)I420, width=(int)1280, height=(int)800' ! ffenc_mpeg4 ! tcpserversink host=$CLIENT_IP port=$PORT and on the target, the client receives, decodes and display with $ # Pipeline 2 $ gst-launch tcpclientsrc host=$SERVER_IP port=$PORT  ! 'video/mpeg, width=(int)1280, height=(int)800, framerate=(fraction)10/1, mpegversion=(int)4, systemstream=(boolean)false' ! vpudec ! mfw_isink The filter caps between the tcpclientsrc and the decoder (vpudec) depend on the sink caps coming from the server encoder (ffenc_mpeg4), so these may change depending on your needs. Running the above pipelines require the environment variables SERVER_IP, CLIENT_IP and PORT. In case you want the i.MX6 to act as a server, just change the video source (either mfw_v4lsrc of v4l2src) and the encoder (vpuenc), so $ # Pipeline 3 $  gst-launch v4l2src  !  'video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, interlaced=(boolean)false, framerate=(fraction)10/1'  ! vpuenc ! tcpserversink host=$CLIENT_IP port=$PORT For testing purposes, set SERVER_IP=127.0.0.1, CLIENT_IP=127.0.0.1 and PORT=500, and run pipeline 3 and 2 in two different consoles. Check with 'top' the  CPU usage and see that VPU is actually doing most of the work.

GStreamer has a simple feature to enable tracing, allowing the developer to do basic debugging. These can be done in two ways: Adding the parameter --gst-debug=LIST to the pipeline (a pipeline is a executed gst-launch command) Prepending the environment variable GST_DEBUG=LIST' LIST is a a comma-separated argument, indicating the GStreamer elements to trace. For example, if one needs to trace the sink element      $ GST_DEBUG=*sink*:5 gst-launch playbin2 uri=file:///sample.avi or      $ gst-launch playbin2 uri=file:///sample.avi --gst-debug=*sink*:5 Both commands produces the same log. In case want to trace for than one element, so can simple add the <element>:5, for example      $ GST_DEBUG=mfw_v4lsink:5,vpudec:5 gst-launch playbin2 uri=file:///sample.avi The number 5 indicates the log category, where 5 is the highest (the most verbose log you can get) and 0 produces no output (5=LOG, 4=DEBUG, 3=INFO, 2=WARN, 1=ERROR). Log can be huge in each pipeline run. One way to filter it is using the grep command. Before grepping, one needs to redirect the standard error to the standard output (GStreamer log goes always to stderr), so      $ GST_DEBUG=mfw_v4lsink:5,vpudec:5 gst-launch playbin2 uri=file:///sample.avi 2>&1 | grep <filter string> In case the log needs to be shared, it is important to remove the 'color' of the log, again, one just needs to add the parameter --gst-debug-no-color or prepend the env variable GST_DEBUG_NO_COLOR=1 ----- More shell variables that GStreamer react, can be found here https://developer.gnome.org/gstreamer/0.10/gst-running.html

There is no Freescale GStreamer element which does the JPEG decoding, so we must rely on a standard one, like 'jpegdec'. In case your Linux system was built using LTIB, in order to have the jpegdec element included on the gst-plugin-good, follow these steps: On the LTIB menuconfig, make sure the following packages are selected: gstreamer-plugins-good libjpeg libpng Remove the configure parameters '--disbale-libpng' and '--disable-jpeg' on the file './dist/lfs-5.1/gst-plugins-good/gst-plugins-good.spec' Rebuild and flash your board (or SD card) again. Image display VSALPHA=1 gst-launch filesrc location=sample.jpeg ! jpegdec ! imagefreeze ! mfw_isink Important: non 8 pixel aligned width and height is treated as not supported format in isink plugin.

Freescale does not have a specific GStreamer element to do JPEG encoding, so the standard 'jpegenc' should be used. Image Capture With a web camera gst-launch v4l2src num-buffers=1 ! jpegenc ! filesink location=sample.jpeg With an embedded camera gst-launch mfw_v4lsrc num-buffers=1 !  jpegenc ! filesink location=sample.jpeg More pipelines on GStreamer i.MX6 Pipelines

Multiple-Overlay (or Multi-Overlay) means several video playbacks on a single screen. In case multiple screens are needed, check the dual-display case GStreamer i.MX6 Multi-Display $ export VSALPHA=1 $ SAMPLE1=sample1.avi; SAMPLE2=sample2.avi; SAMPLE3=sample3.avi; SAMPLE4=sample4.avi; $ WIDTH=320; HEIGHT=240; SEP=20 Four displays (2x2) $gst-launch \ playbin2 uri=file://`pwd`/$SAMPLE1 video-sink="mfw_isink axis-top=0 axis-left=0   disp-width=$WIDTH disp-height=$HEIGHT" \ playbin2 uri=file://`pwd`/$SAMPLE2 video-sink="mfw_isink axis-top=0 axis-left=`expr $WIDTH + $SEP` disp-width=$WIDTH disp-height=$HEIGHT" \ playbin2 uri=file://`pwd`/$SAMPLE3 video-sink="mfw_isink axis-top=`expr $HEIGHT + $SEP` axis-left=0   disp-width=$WIDTH disp-height=$HEIGHT" \ playbin2 uri=file://`pwd`/$SAMPLE4 video-sink="mfw_isink axis-top=`expr $HEIGHT + $SEP` axis-left=`expr $WIDTH + $SEP` disp-width=$WIDTH disp-height=$HEIGHT" Basic rotation, (2 x 1, normal and inverted) gst-launch \ playbin2 uri=file://`pwd`/$SAMPLE1 video-sink="mfw_isink axis-top=0 axis-left=0   disp-width=$WIDTH disp-height=$HEIGHT rotation=0" \ playbin2 uri=file://`pwd`/$SAMPLE2 video-sink="mfw_isink axis-top=`expr $HEIGHT + $SEP` axis-left=0 disp-width=$WIDTH disp-height=$HEIGHT rotation=3"