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h264 choppy export
Hi everyone,
I apologize for the silly issue, this should be simple but it isn’t working properly.
I normally shoot on Canon DSLRs (1080p 25fps) and edit on FCP, but lately I have had access to Premiere Pro and gave it a try editing some short simple videos, avoiding the conversion to Apple ProRes and editing native h264. When I’ve finished my edit, I export from Premiere Pro with the following settings:
Format: h264
Preset: Youtube Widescreen (the videos will be uploaded to youtube)I use the setting for my sequence (usually 1080p 25fps, PAL) and then I only tweak the bitrate settings in the video tab, usually to the following:
Bitrate encoding: VBR, 2 Pass
Target bitrate [Mbps]: 8 or 9
Maximum bitrate [Mbps]: 10Now, everything works fine and the quicktime playback of the export is smooth on my computer, but if I play it on my older Macbook (which I usually do to test the video), the playback is slightly choppy.
I thought it could be a matter of data rate, so I checked the quicktime info of the video (during playback) and, for every video export from Premiere Pro, Quicktime always shows the datarate as 0. However when I export h264 files from FCP or h264 converted with Mpeg Streamclip, Quicktime is always able to tell me the actual datarate (always around 10mb for Youtube videos).
Of course the issue lies with the fact that my old Macbook can’t perform really well anymore, but I fail to understand why FCP or Mpeg Streamclip h264exports playback very smoothly and Premiere Pro h264 exports with the same datarate don’t. I guess there must be some technical problem in the process which I am unable to identify.
Thanks for your help.
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1 Reply
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It is in fact not the encoding pass from Media encoder but as you speculated more than likely the spec of your old mac book not being able to decode that particular file from Media encoder. Under the hood all of these programs use their own Algorithms to make your video magic happen and one encoder may export a more friendly less heavy file. I would not really worry as you are uploading to youtube anyway and they will post process the file so it streams smoothly.
Just a suggestion. If you are working with short form media 10 min or under, don’t bother using a VBR pass, you will invariably be wasting time and bits (quality). use a CBR and set to your desired bitrate. Your encoding will be faster and you know that the quality will be equal through the entire program.
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