H.264 Export Problem

[Angelo Lorenzo]

https://mediaarea.net/en/MediaInfo open your new file in here, switch to “text” view and paste the results.

I would assume you’re encoding, or attempting to, such a high bitrate for a reason as to not start a debate. 300mbps is the maximum bitrate for the h.264 standard and, if my math is correct, the reason you received the 15gig file.

——————–
Angelo Lorenzo

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[Ivan Myles]

[Stamos Dimitro] “Does anyone know why this is happenning and how can I fix it?”

When bitrate is not a constraint there is an inherent maximum determined by compression parameters (mostly internal) and GOP structure. Maximum bitrate occurs when key frame distance is set to one frame (all I-frame), and typically will be about 3-4 bpp (180-240 Mbps for 1920×1080-30p).

I presume you are setting a high bitrate in order to maximize quality. After performing several tests I concluded that unconstrained H.264 High Profile with two-pass VBR and key frame distance set to about 12-15 frames produces virtually equivalent quality to an all intra-frame H.264 file. Bitrate should be about 0.75-1.0 bpp (45-60 Mbps for 1920×1080-30p).

This might not be a consideration for you, but note that H.264 Level 5.1 does not play properly in QuickTime. Level 5.0 and below work fine.

[Balu Gabbu]

it is a good suggestion..
i tried with that preset conditions and got a less sized video but missing some clarity in video
which one should i rectify in above said preset for H.264exporting
i need some clear video
now by using 0.75-2.4bpp and 15keyframes it is somewhat blur to see…

[Ivan Myles]

The following custom settings produce the maximum quality for the H.264 codec:

– Format: H.264
– Level: 5.1
– Profile: High
– Maximum Depth: Enabled
– Target Bitrate: 300 (max)
– Maximum Bitrate: 300 (max)
– Key Frame Distance: 1
– Maximum Render Quality: Enabled

Set the parameters in the Multiplexer tab as follows:

– Multiplexer: MP4
– Stream Compatibility: Standard

Click the “Queue” button to process the file using Adobe Media Encoder. When AME opens, click the green arrow to start the job.

If the results are not satisfactory, please post some screen captures of bad frames in your encoded video.

[Balu Gabbu]

ok thank you for info
i will use it …
its helpful:)

[Balu Gabbu]

here in target bitrate you said 300(max)and for
max.bitrate 300(max)
is it mbps or kbps?
if so
it is showing a huge file size of 4056mb for a 6min video…
is it supposed to be like that.

balu… 🙂

[Ivan Myles]

It’s 300 mbps.

Is the 4056MB an estimated file size before encoding or the actual file size after encoding? Actual file size will be less than the estimate when target bitrate is set to a very high number. If the actual file size is too high, increase the key frame distance.