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Processing Lumix GH3 and Nokia 808 Video for YouTube: The Search for the Best Settings

August 15, 2014

I’m writing this post to share my experience editing and processing video clips shot with a Lumix GH3 or with a Nokia 808. My primary purpose for editing and processing video has been for uploading videos to YouTube, so I’m trying to find the best combination of compression and image quality. I invite you to share your video processing experience and advice in the comments section.

In this post, I’m going to use the words “format”, “codec”, and “container” as they are explained in this YouTube video from Videomaker.com.

I use PowerDirector 10 for editing and processing. I’ve found it very easy to use, and it worked well until I noticed odd blotches of color in videos that I exported from PowerDirector in MPEG-4 format. Here’s a screenshot that shows orange blotches on my arms in a frame of video that was processed by PowerDirector:

Orange blotches

The full video can be seen here.

I also found that when uploading .mp4 videos to YouTube, YouTube would display a message saying that my videos would process faster if they were in a format that is suitable for YouTube. I understood this to mean that my MPEG-4 videos were not in the best format for YouTube.

I wasn’t sure what was causing the blotches in my videos. The blotches did not exist in the original files from the camera. The blotches occurred only after the files were edited and exported from PowerDirector 10. I wondered if the blotches could be avoided if I shot the video in a different format, or if I exported the edited files from PowerDirector 10 with a different codec.

So, instead of shooting in the GH3’s high-bitrate MOV format and exporting from PowerDirector in MPEG-4, I tried shooting some video in AVCHD 1080p, 24fps at 24 Mbps bitrate and exporting the edited clip from PowerDirector in H.264 AVC 1080p, 23.976fps at 13 Mbps.

PD screen shot with h264 circledI found that videos shot in AVCHD (with an .mts extension) and exported from PowerDirector in H.264 AVC (with an .m2ts extension) have not had any color blotches. Here’s a 55-second sample of such video. Its bitrate was 13 Mbps, and the file size is 91 MB.

In a thread on the Cyberlink forum, a forum member named Carl said that he exports videos from PowerDirector in Windows Media Video (WMV) 9 HD standard.

PD screen shot with WMV circled

I tried that and found that the video clip that I showed above became just 40 MB in WMV (at a data rate of 6 Mbps). I thought that the WMV version still looked acceptable. Here it is on YouTube:

I’ve also found that the MOV video that acquired color blotches when I converted it to MPEG-4 in PowerDirector did not acquire color blotches when I converted from MOV to AVCHD in PowerDirector.

So, I’m concluding from this experience that MPEG-4 is causing the color blotches in my videos.

I’ve also observed that when uploading .m2ts files to YouTube, I do not get a message from YouTube saying that the video will process faster if I use a format that is suitable for YouTube. I understand this to mean that the H.246 codec is suitable for YouTube, which is something that I’ve heard on several YouTube videos.

I’ll keep experimenting and will share what I learn. I’ll be very interested to read about your experiences. Please share your experiences and suggestions in the comments section of this post.

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