@Former user @tami-0

Hi Gid. Just off to bed now 😉

Not sure. There does seem to be a 600GB upload limit as well. I find the upload specs a bit confusing myself as it also says Potentially acceptable 15MBit/s for HD, Does that mean a lower bit rate may be acceptable?

No up or down scaling allowed. Narrow acceptable frame rates which means original footage must also be shot at between those frame rates to avoid frame speed conversions and must be rendered in the screen ratio shot.

They are pretty picky but notice no mention of audio compression limits (volume wise) but a minimum of 128kb/s. PCM, AC-3, AAC, or MP3.

Never seen anything before like it outside of broadcasting requirements.

The odd thing is, none of those requirements have as much effect on quality as the equipment used and camera settings.

Good night.

Ray.

@tami-0

I'm assuming your source file/s are 1920x1080, 29.97, Progressive. Please advise if they aren't.

An MPEG 4 file at the same size as an MPEG file will be better quality, so I'd suggest MPEG 4.

To achieve a "compression ratio" of 1.2, do this (I'm assuming your source frame rate is 29.97):

Make your movie settings:

On the MPEG 4 export screen, pick the "Full HD, 1920x1080 29.97p" Preset.

After choosing the export preset, Click Advanced, then set it as follows:

The 65,000 and 70,000 should give you around 59mb/sec in your video file (Magix undershoots a bit on bitrates when it renders), which will give you the 1.2 "compression" value.

My workings: Bitrate=Width x Height x Framerate / Compression Ratio

Don't forget to add the black section at the start and the end. You can create a black 1920x1080 image by doing a export to Jpeg on a blank part of the timeline.

For the floor, this "compression ratio" term is misleading. They should be saying "quality value". Looking at the formula, it is clear that the more bitrate you give them, the happier they are, as the higher you go, the lower the "compression" value.

Reference site (Ray's screenshots):

https://help.filmhub.com/en/articles/2663770-videos

I must say, for a film hoster, they don't explain thing very well.

@CubeAce Sleep well. I should be doing that too 👍

I read the same Filmhub Help centre doc trying to see what it was all about.

@tami-0 I tried a few MPEG-2 options & got the same error msg you got but this one exported, working on your QC's equation for a 1920 x 1080 x 29.97 clip the Bitrate would have to be 50,000, so that's what I put in the Export.

Whether it's right or wrong all I know is it exported the 1hr project in just short of 40mins,

This is what it produced

(1920 x 1080 x 29.97) / 50,000 = 1242.91 / 1000 = 1.24 🤷‍♂️

Let us know what you end up doing & if whatever you upload gets accepted by the Queens Council 👍👍

@AAProds Hi, I suggested an MPEG-4 in an earlier comment, but it was said 'I want the superior mpeg2 quality. However, all my settings which deviate from the presets are failing and giving error for mpeg2.'  so that's why I've been concentrating on MPEG-2 not MPEG-4,
MPEG-4 is what I would go with as I said in that comment & it would render faster, but I don't know about quality, a lot of what i read doesn't say MPEG-4 is a very good quality, mainly from the Boris people who prefer ProRes, & the Filmhub says Preferred - ProRes,

but the difference between MPEG-2 & MPEG-4?

@Former user

Re MPEG 2 vs MPEG 4, I think the proof is in the pudding: MPEG 2 is simply not used these days because it is so inefficient. Everybody does MPEG 4. I contend that for the same file size, an MPEG 4 render will be far better than a MPEG 2 render.

It would be good for @tami-0 to justify the claim "I want the superior mpeg2 quality.".

Re:

(1920 x 1080 x 29.97) / 50,000 = 1242.91 / 1000 = 1.24

Increase your bitrate (as I showed above) and you'll get your Comp Ratio down below 1.2.

I don't buy this idea of optimised presets. I change my preset bitrate values all the time and have never had an issue., although I don't render MPEG 2s often, it's almost always AVC or HEVC.

@AAProds @Former user @tami-0

Why do they quote in bytes? 20,000,000 bytes (20MBs) for 1080p? Also it seems anamorphic pixels base the calculations. giving 2.39:1 (not square which would be 16:9). I don't know what is going on.

Ray.

@CubeAce

All the quotes that I can see on that site are Mb/s, not MB/s, so the Magix export numbers eg 60,000kb/s should be ballpark OK.

It does mention (as far as I can tell) that if you're putting up anamorphic video eg 720:576 16:9, you have to use the 720 number, not the 1024 number it stretches to, when calculating this compression ratio.

@AAProds

Hi Al.

They quote in bps? If it is bits then the calculations shown don't come to 20Mb/s

Above seems to be quoting minimum possible acceptable bit rates for each screen resolution.

Ray.

@CubeAce

Ray, 20,000,000 bits per sec is 20,000 kbps (as we'd set on the export screen).

Yes, as understand it there's no such thing as a MBit per sec; it should be Mbit per sec. If they're talking about bytes, it'd be MBytes per sec. 8 b equal a B. 😂

I agree their 15Mbps (or 15,000kbps) for HD is way under the rejection rate they have given @tami-0 for the MPEG 2.

@tami-0

Hi

Late to the party today, to get back on track:

. . . . My QC sent me following feedback: "If my calculations are correct - that bitrate is too high: (1920x1080x29.97)/28000 = 2219.49/1000 = a compression rate of 2.219 which is higher than our 1.24 limit for mpeg2 " . . . .

This statement does not make sense as has been previously stated above, and is incorrect given that the bitrate is the divisor.

To get a compression rate value lower for a given resolution and frame rate eg to 1.24 the bitrate has to be increased.

In the example given the bitrate would have to be increased to approximately 50000 kbs not lowered ie

(1920x1080x29.97)/50000 = 1,242/1000 = 1.24 (to 2 dec pl)

@CubeAce has given you the requirements for FilmHub, however many of the formats they accept are not available in Movie Studio, and trying to work through the pages is not an easy read to determine the info you actually need.

I would suggest you ask QC for a specification for the video requirements ie:

• A defined file format eg mp4, mpg, AVI
• Video resolution ie width and height in pixels.
• Frame rate required.
• Video and Audio codecs to be used if mp4 or other container file formats.
• The Average and Maximum bitrates.
• Colour space eg BT 709, BT 2020

John EB
Forum Moderator

@CubeAce, @AAProds

Hi

I found those pages to have 'issues', eg one such is the one you commented on ie

. . . . 15Mbps (or 15,000kbps) for HD . . . .

HD by definition is 1280 x 720, not 1920 x 1080 which is FullHD - this loose use of the definition HD is quite common and bad practice.

John EB

@johnebaker @tami-0 @Former user @AAProds

Hi John. Tami.

I found a further upload specs page. It was disconnected from the other upload requirement pages.

The link is to this the page. This looks more like broadcast requirements but still no LUFTS requirements specified. Just bit depth and sampling rates.

I note that DNxHR is a Pro Tools export format also available to Premier Pro.

There may also be further complications as some further required data has to be frame accurate.

Adding chapter and add breaks requirements.

Ray.

@CubeAce Thanks , yep I saw that one & it was one of a few I read that made me steer away from mp4 esp after the OP didn't seem to want mp4, I wasn't sure about MPEG-2, as far as i knew it was a dated format,

@CubeAce, @AAProds

Hi

I found those pages to have 'issues', eg one such is the one you commented on ie

. . . . 15Mbps (or 15,000kbps) for HD . . . .

HD by definition is 1280 x 720, not 1920 x 1080 which is FullHD - this loose use of the definition HD is quite common and bad practice.

 

@johnebaker Same with 4k & UHD, in that last pic Ray posted it says '1080p or 4k' ,& in the earlier pic further up it says '4k/UHD' that's another that get's used loosely. 🤷‍♂️

@tami-0

I'm assuming your source file/s are 1920x1080, 29.97, Progressive. Please advise if they aren't.

An MPEG 4 file at the same size as an MPEG file will be better quality, so I'd suggest MPEG 4.

To achieve a "compression ratio" of 1.2, do this (I'm assuming your source frame rate is 29.97):

Make your movie settings:

On the MPEG 4 export screen, pick the "Full HD, 1920x1080 29.97p" Preset.

After choosing the export preset, Click Advanced, then set it as follows:

The 65,000 and 70,000 should give you around 59mb/sec in your video file (Magix undershoots a bit on bitrates when it renders), which will give you the 1.2 "compression" value.

My workings: Bitrate=Width x Height x Framerate / Compression Ratio

Don't forget to add the black section at the start and the end. You can create a black 1920x1080 image by doing a export to Jpeg on a blank part of the timeline.

For the floor, this "compression ratio" term is misleading. They should be saying "quality value". Looking at the formula, it is clear that the more bitrate you give them, the happier they are, as the higher you go, the lower the "compression" value.

Reference site (Ray's screenshots):

https://help.filmhub.com/en/articles/2663770-videos

I must say, for a film hoster, they don't explain thing very well.

 

The response I got from the QA guy : "Those settings for MP4 should be fine. Our compression rate limit for h264 is actually 5.2, so technically you'd be fine with a VBR 28000 kbit/s bitrate (or less) = equalling a 2.219 compression rate. The proposed 65000 kbit will be fine, technically; you'll just maybe want to make a judgment call yourself regarding the quality difference."

What do you think ?

@tami-0

That sounds logical. 28,000kbps, I think, is pretty high for a 1920x1080 video, so go with that. At some point, pumping more bitrate into a video won't achieve much improvement, which is what he was alluding to with the comment "technically..".

If you wanted to get technical, you could install Mediainfo and find out the bitrate of your source video, then use 20% more than that (educated guess!) to maintain the original quality.

I've made a spreadsheet that calculates the Compression Rate or Bit Rate if you have videos of other dimensions to put up:

https://docs.google.com/spreadsheets/d/1ZUi3Zrr3cJ7nPN95wzUxbXTM_j4Tlyxv/edit?usp=sharing&ouid=114781885879885858690&rtpof=true&sd=true

@tami-0

Hi

I agree with @AAProds, 28000kbps is OK for 1920 x 1080 at 29.97fps.

The 'standard' MP4 export preset for 1920 x 1080 at 29.97 fps is 24000 kbps for the Average bitrate and 30000kbps for the Maximum value.

John EB