1. Added motion vector as 2nd output from the H264EncoderV4l2 module.

[mohammedzakikochargi]

IMPORTANT: All PRs must be linked to an issue (except for extremely trivial and straightforward changes).

Fixes #240

Description
Implemented 2nd output from H264EncoderV4L2 module as motion vector frame apart from h264 encoded frames

Precise description of the changes in this pull request
During h264 encoding motion vectors are generated as difference in motion vectors between two subsequent frames. It is the process by which frames can be assessed for similarities between frames that can reused. The same motion vectors are extracted and serialized using overlay module, and it is send as 2nd output from H264EncoderV4L2 module apart from h264 encoded frames. Also added props to enable or disable motion vector frame

Alternative(s) considered

Have you considered any alternatives? And if so, why have you chosen the approach in this PR?

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Checklist

• I have read the Contribution Guidelines
• I have written Unit Tests
• I have discussed my proposed solution with code owners in the linked issue(s) and we have agreed upon the general approach

[github-actions]

Test Results Linux-CudaT

    1 files  ±0      1 suites  ±0   10m 24s ⏱️ -1s
403 tests ±0  237 ✔️ ±0  166 💤 ±0  0 ❌ ±0 
237 runs  ±0    71 ✔️ ±0  166 💤 ±0  0 ❌ ±0 

Results for commit d39ede2. ± Comparison against base commit 13a6be8.

♻️ This comment has been updated with latest results.

[github-actions]

Test Results Windows-cuda

    1 files  ±0      1 suites  ±0   12m 42s ⏱️ ±0s
399 tests ±0  293 ✔️ ±0  106 💤 ±0  0 ❌ ±0 
293 runs  ±0  187 ✔️ ±0  106 💤 ±0  0 ❌ ±0 

Results for commit d39ede2. ± Comparison against base commit 13a6be8.

♻️ This comment has been updated with latest results.

[github-actions]

Test Results Win-nocuda

    1 files      1 suites   10m 43s ⏱️
298 tests 230 ✔️ 68 💤 0 ❌
230 runs  162 ✔️ 68 💤 0 ❌

Results for commit d39ede2.

♻️ This comment has been updated with latest results.

[github-actions]

Test Results Linux

    1 files      1 suites   10m 23s ⏱️
302 tests 230 ✔️ 72 💤 0 ❌
230 runs  158 ✔️ 72 💤 0 ❌

Results for commit d39ede2.

♻️ This comment has been updated with latest results.

[github-actions]

Test Results Linux_ARM64

    1 files  ±0      1 suites  ±0   10m 49s ⏱️ -11s
425 tests  - 3  262 ✔️  - 3  163 💤 ±0  0 ❌ ±0 
262 runs   - 3    99 ✔️  - 3  163 💤 ±0  0 ❌ ±0 

Results for commit d39ede2. ± Comparison against base commit 13a6be8.

This pull request removes 4 and adds 1 tests. Note that renamed tests count towards both.

h264encoderv4l2helper_tests ‑ memory_cache_free_test
h264encoderv4l2helper_tests ‑ rgb24_black
h264encoderv4l2helper_tests ‑ yuv420_black
h264encoderv4l2helper_tests ‑ yuv420_black_dmabuf

h264encoderv4l2_tests ‑ encode_and_extract_motion_vectors

♻️ This comment has been updated with latest results.

[mraduldubey]

remove tests which are not required