user1522: I was wondering if anyone knows from where I could get a few (short) video  assets in high bitrate to check the quality output of a transcoder.
Some context: A few years ago I was working on a VOD project and the person who was configuring the transcoders had a set of 4 videos that really pushed the transcoder (e.g. very clear water ripples, a few bees on top of a yellow flower... and I cannot recall the other 2). I remember this person telling me that he had picked those videos as they pushed different aspects of transcoders, so I was wondering if there's something out there I could reuse.
edit
I haven't found so far a good set of free videos to push the transcoder, but I have found the following sources.

4k media: Has quite a few free high bitrate 4k (30-60 fps) videos.   


user14523: Here are a few resources I'm aware of.

The Video Quality Experts Group has a variety of test material available.
Big Buck Bunny, with a CC license, is often used as a test asset.
Tektronix at least used sell some test assets to complement their monitoring tools.
SRI has several test patterns and compliance checking assets for sale.


1522: <p>I was wondering if anyone knows from where I could get a few (short) video  assets in high bitrate to check the quality output of a transcoder.</p>

<p>Some context: A few years ago I was working on a VOD project and the person who was configuring the transcoders had a set of 4 videos that really pushed the transcoder (e.g. very clear water ripples, a few bees on top of a yellow flower... and I cannot recall the other 2). I remember this person telling me that he had picked those videos as they pushed different aspects of transcoders, so I was wondering if there's something out there I could reuse.</p>

<h2>edit</h2>

<p>I haven't found so far a good set of free videos to push the transcoder, but I have found the following sources.</p>

<ul>
<li><a href="https://4kmedia.org/" rel="nofollow noreferrer">4k media</a>: Has quite a few free high bitrate 4k (30-60 fps) videos.   </li>
</ul>
 14523: <p>Here are a few resources I'm aware of.</p>

<ul>
<li>The <a href="https://www.its.bldrdoc.gov/vqeg/downloads.aspx" rel="nofollow noreferrer">Video Quality Experts Group</a> has a variety of test material available.</li>
<li><a href="https://peach.blender.org/" rel="nofollow noreferrer">Big Buck Bunny</a>, with a CC license, is often used as a test asset.</li>
<li><a href="https://www.tek.com/picture-quality-analyzer" rel="nofollow noreferrer">Tektronix</a> at least used sell some test assets to complement their monitoring tools.</li>
<li><a href="https://www.sri.com/engage/products-solutions/sarnoff-video-test-tools" rel="nofollow noreferrer">SRI</a> has several test patterns and compliance checking assets for sale.</li>
</ul>
