# Multimedia **URL:** https://forum.amebaiot.com/c/freertos/multimedia/74.md [Latest](https://forum.amebaiot.com/latest.md) · [Categories](https://forum.amebaiot.com/categories.md) · [Tags](https://forum.amebaiot.com/tags.md) --- ## [About the FreeRTOS Multimedia category](https://forum.amebaiot.com/t/about-the-freertos-multimedia-category/4425)
**Author:** [@emch](https://forum.amebaiot.com/u/emch)\ **Replies:** 0\ **Last updated:** [October 24, 2025, 6:12am UTC](https://forum.amebaiot.com/t/about-the-freertos-multimedia-category/4425 "2025-10-24T06:12:36Z")
For all topics related to FreeRTOS Multimedia solution: audio, media, display, SpeechMind, etc. 讨论关于 FreeRTOS 多媒体方案的所有话题，包括音频、媒体、显示、SpeechMind 等。 --- ## [AmebaPro2 (RTL8735B): IQ files for sensors without a tuned IQ (incl. OV5647) + how to change sensor resolution/FPS from sensor.h](https://forum.amebaiot.com/t/amebapro2-rtl8735b-iq-files-for-sensors-without-a-tuned-iq-incl-ov5647-how-to-change-sensor-resolution-fps-from-sensor-h/5164)
**Author:** [@deepakkumarbinwal](https://forum.amebaiot.com/u/deepakkumarbinwal)\ **Replies:** 1\ **Last updated:** [October 19, 2026, 10:42am UTC](https://forum.amebaiot.com/t/amebapro2-rtl8735b-iq-files-for-sensors-without-a-tuned-iq-incl-ov5647-how-to-change-sensor-resolution-fps-from-sensor-h/5164 "2026-10-19T10:42:47Z")
Hello, We are building a video doorbell on AmebaPro2 (RTL8735B) with SDK ameba-rtos-pro2, release 9.6\_r. We are evaluating several camera sensors from the SDK’s supported list to find a good low-cost option. Some suppo… --- ## [Adding Sony IMX219 sensor support on AmebaPro2 (RTL8735B), SDK release 9.6\_r](https://forum.amebaiot.com/t/adding-sony-imx219-sensor-support-on-amebapro2-rtl8735b-sdk-release-9-6-r/5136)
**Author:** [@deepakkumarbinwal](https://forum.amebaiot.com/u/deepakkumarbinwal)\ **Replies:** 1\ **Last updated:** [October 16, 2026, 8:43am UTC](https://forum.amebaiot.com/t/adding-sony-imx219-sensor-support-on-amebapro2-rtl8735b-sdk-release-9-6-r/5136 "2026-10-16T08:43:24Z")
Hi, We are moving our AmebaPro2 (RTL8735BDM) video doorbell from the IMX327 to the Sony IMX219 (IMX219PQH5-C, MIPI CSI-2 2-lane, RAW10). We plan to write the driver ourselves using the ameba-camera-sensor-driver repo, w… --- ## [MP4 錄影檔需要第三個軌（timed metadata / user-data track）](https://forum.amebaiot.com/t/mp4-timed-metadata-user-data-track/5106)
**Author:** [@Arrow\_rick.lee](https://forum.amebaiot.com/u/Arrow_rick.lee)\ **Replies:** 2\ **Last updated:** [October 1, 2026, 9:06am UTC](https://forum.amebaiot.com/t/mp4-timed-metadata-user-data-track/5106 "2026-10-01T09:06:56Z")
我們目前用 Standard SDK 的 mmfv2 mp4\_module（component/media/muxer/mp4\_muxer.h，實作在函式庫內）錄 H.264 + G.711（mp4\_audio\_format = 1）到 SD 卡，這部分已正常運作。 ONVIF Profile G 的 Search / Replay 測試中有兩項（SEARCH-2-1-14、2-1-16）要求錄影包含一個 Metadata track… --- ## [Need latest VOE and Sensor drivers source code](https://forum.amebaiot.com/t/need-latest-voe-and-sensor-drivers-source-code/4748)
**Author:** [@yugandhar](https://forum.amebaiot.com/u/yugandhar)\ **Replies:** 11\ **Last updated:** [August 18, 2026, 2:22am UTC](https://forum.amebaiot.com/t/need-latest-voe-and-sensor-drivers-source-code/4748 "2026-08-18T02:22:25Z")
Hi, I downloaded camera sensor driver source code from Camera Module Bring Up Guide – Realtek IoT/Wi-Fi MCU Solutions and compiled voe.bin and sensor\_f37.bin using pdf guide. I copied both files to folder ameba-rtos-pro… --- ## [IMX662 I2C ADR](https://forum.amebaiot.com/t/imx662-i2c-adr/4916)
**Author:** [@Van\_An\_Vo](https://forum.amebaiot.com/u/Van_An_Vo)\ **Replies:** 3\ **Last updated:** [June 29, 2026, 6:55am UTC](https://forum.amebaiot.com/t/imx662-i2c-adr/4916 "2026-06-29T06:55:48Z")
We are currently customizing a camera module with the Sony IMX662 sensor, but we cannot find it in the ameba\_rtos\_pro2 library. Could you please let us know what the I²C address of this sensor is? We truly don’t know wh… --- ## [Text OSD with 31+ characters has issues](https://forum.amebaiot.com/t/text-osd-with-31-characters-has-issues/4852)
**Author:** [@yugandhar](https://forum.amebaiot.com/u/yugandhar)\ **Replies:** 8\ **Last updated:** [June 2, 2026, 1:36am UTC](https://forum.amebaiot.com/t/text-osd-with-31-characters-has-issues/4852 "2026-06-02T01:36:21Z")
Hi, For rts\_osd2\_type\_text when the string buffer has more than 31 characters, the trailing characters are not printing sometimes and total text ignored if more than 36+ characters are available. The OSD demo provided a… --- ## [NN Model loading from Memory instead of Flash or SD card failing with exceptions](https://forum.amebaiot.com/t/nn-model-loading-from-memory-instead-of-flash-or-sd-card-failing-with-exceptions/4868)
**Author:** [@yugandhar](https://forum.amebaiot.com/u/yugandhar)\ **Replies:** 1\ **Last updated:** [May 28, 2026, 9:49am UTC](https://forum.amebaiot.com/t/nn-model-loading-from-memory-instead-of-flash-or-sd-card-failing-with-exceptions/4868 "2026-05-28T09:49:37Z")
Hi Realtek Team, We need to keep NN model data and firmware in single partition to avoid multiple OTA updates. so we tried below code to initialize NN model with model\_src = MODEL\_SRC\_MEM and with static buffer initial… --- ## [OSD text with black color showing black rectangles instead of characters](https://forum.amebaiot.com/t/osd-text-with-black-color-showing-black-rectangles-instead-of-characters/4516)
**Author:** [@yugandhar](https://forum.amebaiot.com/u/yugandhar)\ **Replies:** 10\ **Last updated:** [May 26, 2026, 1:17am UTC](https://forum.amebaiot.com/t/osd-text-with-black-color-showing-black-rectangles-instead-of-characters/4516 "2026-05-26T01:17:36Z")
Hi, I found an issue in OSD rendering when used black color for text/date/time. Please see the images below. How to fix it? If anyone has solution for this problem, please help me. Thanks, Yugandhar --- ## [RTSP over SSL/TLS and stream authentication](https://forum.amebaiot.com/t/rtsp-over-ssl-tls-and-stream-authentication/4838)
**Author:** [@yugandhar](https://forum.amebaiot.com/u/yugandhar)\ **Replies:** 1\ **Last updated:** [May 6, 2026, 10:07am UTC](https://forum.amebaiot.com/t/rtsp-over-ssl-tls-and-stream-authentication/4838 "2026-05-06T10:07:58Z")
Hi, Is Ameba SDK supports RTSP over SSL/TLS and also authentication? I didn’t find any example related to that. If no secure transport, atleast authentication is little helpful to protect the stream. If available, ple… --- ## [ISP / IQ Tuning Tool for Ameba Pro](https://forum.amebaiot.com/t/isp-iq-tuning-tool-for-ameba-pro/4571)
**Author:** [@ravinder](https://forum.amebaiot.com/u/ravinder)\ **Replies:** 5\ **Last updated:** [March 9, 2026, 2:20am UTC](https://forum.amebaiot.com/t/isp-iq-tuning-tool-for-ameba-pro/4571 "2026-03-09T02:20:58Z")
Hello, I am using Realtek Ameba Pro with a GC4653 image sensor. Could someone please let me know if there is an ISP/IQ-tuning tool available for this setup? If yes — please share the link or documentation. Thanks in a… --- ## [ISP tuning required for Sony IMX662 on Ameba Mini](https://forum.amebaiot.com/t/isp-tuning-required-for-sony-imx662-on-ameba-mini/4726)
**Author:** [@yugandhar](https://forum.amebaiot.com/u/yugandhar)\ **Replies:** 11\ **Last updated:** [March 6, 2026, 9:08am UTC](https://forum.amebaiot.com/t/isp-tuning-required-for-sony-imx662-on-ameba-mini/4726 "2026-03-06T09:08:38Z")
Hi, I am using Sony IMX662 sensor with Ameba Mini board. I can see red and blue lines (please check the attched one) on the image in low light conditions. I am already using the tuned iq, fcs and sensor bin files provid… --- ## [How to enable HDR mode in Sony IMX662](https://forum.amebaiot.com/t/how-to-enable-hdr-mode-in-sony-imx662/4760)
**Author:** [@yugandhar](https://forum.amebaiot.com/u/yugandhar)\ **Replies:** 1\ **Last updated:** [March 3, 2026, 9:24am UTC](https://forum.amebaiot.com/t/how-to-enable-hdr-mode-in-sony-imx662/4760 "2026-03-03T09:24:37Z")
Hi, The sony sensor driver supports both linear and HDR modes as mentioned in the source code. I tried by setting all structure memebers which has hdr\_mode in the files video\_boot.c and video\_user\_boot.c but, still A… --- ## [MP4 to SD file fails](https://forum.amebaiot.com/t/mp4-to-sd-file-fails/4736)
**Author:** [@khassounah](https://forum.amebaiot.com/u/khassounah)\ **Replies:** 2\ **Last updated:** [February 21, 2026, 7:45pm UTC](https://forum.amebaiot.com/t/mp4-to-sd-file-fails/4736 "2026-02-21T19:45:34Z")
Hello, I’m having an issue getting the mp4 module to write video to file successfully. My setup is simple video =\> SISO =\> mp4 when I stream jpeg snapshots from the video while the recording is taking place, I get a g… --- ## [Ameba Mini with GC4653 camera sensor](https://forum.amebaiot.com/t/ameba-mini-with-gc4653-camera-sensor/4541)
**Author:** [@yugandhar](https://forum.amebaiot.com/u/yugandhar)\ **Replies:** 10\ **Last updated:** [December 2, 2025, 11:28am UTC](https://forum.amebaiot.com/t/ameba-mini-with-gc4653-camera-sensor/4541 "2025-12-02T11:28:20Z")
Hi, We designed camera sensor board with GC4653 and SoC board with RTL8735BDM module. We modified the FreeRTOS SDK configuration to test mmf2 video example with below changes. In sensor.h file inside the project folder… --- ## [Snapshot example not working](https://forum.amebaiot.com/t/snapshot-example-not-working/4485)
**Author:** [@ravinder](https://forum.amebaiot.com/u/ravinder)\ **Replies:** 11\ **Last updated:** [December 2, 2025, 8:03am UTC](https://forum.amebaiot.com/t/snapshot-example-not-working/4485 "2025-12-02T08:03:03Z")
Hi all, I’m testing the mmf2\_video\_example\_v1\_snapshot\_init() example on the Ameba Pro2 platform, but it’s not working correctly. Below is the log I get when I run it: SNAP=SNAPS \[VID Wrn\]VOE CH0 JPG queue full (queu… --- ## [SD card not recognised after long duration recording](https://forum.amebaiot.com/t/sd-card-not-recognised-after-long-duration-recording/4102)
**Author:** [@Barryn56](https://forum.amebaiot.com/u/Barryn56)\ **Replies:** 4\ **Last updated:** [November 26, 2025, 5:11am UTC](https://forum.amebaiot.com/t/sd-card-not-recognised-after-long-duration-recording/4102 "2025-11-26T05:11:33Z")
Hi. I am using the code below to record video from AMB82-mini and it has been working fine on 128GB cards for relatively short duration (5 hours, each file one hour long). However, I recently recorded a longer duration (… --- ## [How to sync RTC date and time with OSD](https://forum.amebaiot.com/t/how-to-sync-rtc-date-and-time-with-osd/4455)
**Author:** [@yugandhar](https://forum.amebaiot.com/u/yugandhar)\ **Replies:** 4\ **Last updated:** [November 24, 2025, 8:22am UTC](https://forum.amebaiot.com/t/how-to-sync-rtc-date-and-time-with-osd/4455 "2025-11-24T08:22:30Z")
Hi, I tried OSD example available at GitHub - Ameba-AIoT/ameba-rtos-pro2: Realtek Official IoT Software Development Kit for Ameba Series SoC: (Ameba Pro2) I found that the date and time are epoch time (1970-01-01 ….) a… --- ## [Runtime change of rc\_mode (VBR ↔ CBR) not taking effect on AmebaPro2 RTL8735b](https://forum.amebaiot.com/t/runtime-change-of-rc-mode-vbr-cbr-not-taking-effect-on-amebapro2-rtl8735b/4382)
**Author:** [@ravinder](https://forum.amebaiot.com/u/ravinder)\ **Replies:** 4\ **Last updated:** [October 16, 2025, 6:17am UTC](https://forum.amebaiot.com/t/runtime-change-of-rc-mode-vbr-cbr-not-taking-effect-on-amebapro2-rtl8735b/4382 "2025-10-16T06:17:00Z")
Hello, I am using the RTL8735B (AmebaPro2) board and working with its video encoder. I tried to change the bitrate control mode CBR at static initialization , but it seems no effect occurs on the output stream. settin… --- ## [AMB82-mini http jepg streaming though browser example and optimize suggestions](https://forum.amebaiot.com/t/amb82-mini-http-jepg-streaming-though-browser-example-and-optimize-suggestions/4223)
**Author:** [@jimmiedave](https://forum.amebaiot.com/u/jimmiedave)\ **Replies:** 16\ **Last updated:** [October 3, 2025, 6:01am UTC](https://forum.amebaiot.com/t/amb82-mini-http-jepg-streaming-though-browser-example-and-optimize-suggestions/4223 "2025-10-03T06:01:48Z")
I’ve written a multi-client video-JPEG stream web server (a little one) for the AMB82-MINI. It works pretty well, but the video feed gets pretty jerky. client.write(buf, len); where client is of type WiFiClient seems to… --- ## [Reading the mic input to send them over udp](https://forum.amebaiot.com/t/reading-the-mic-input-to-send-them-over-udp/4184)
**Author:** [@Bhanu\_Pratap](https://forum.amebaiot.com/u/Bhanu_Pratap)\ **Replies:** 6\ **Last updated:** [June 30, 2025, 2:59am UTC](https://forum.amebaiot.com/t/reading-the-mic-input-to-send-them-over-udp/4184 "2025-06-30T02:59:40Z")
Hii everyone I am trying to send video and audio over udp to the server. Till now I am successfully sending the video in rtp packets but for audio I am getting issues i can not get the input of the mic and send the packe…