When running a high resolution video. It may run in the computer but if it is still too heavy, so it may not flow properly, it will be choppy. To flow smoothly the CPUs' loading should not be too high. Average value should be some 70 to 75 % and only the peaks near up to 100%. The loading may vary from 50% to 100% depending the speed of movements in the video pictures. The loading can be followed opening from the "System tools" the "System Monitoring" when running the video. With this test videos resolution, format, framerate, bitrate and used player and its settings can be selected to the best running ones. During this test all other applications should be connected off, also the net connection to get the right result.
If the CPU load is not too high but it does not, instead of that, run properly then the graphics card or integrated chipset may be too low performing to run HD videos.
The screenshot picture is taken from my desktop with following specs. (optimized to run high resolution videos in my desktop and TV)
Prosessor: AMD Athlon (tm) 64x2 dual core 4000+ x2, 2.1 GHz with 2.0 Gb RAM
Graphics: Nvidia Geforce 8500 GT (Gallium 0.4 on NV86 driver)
Display: Acer X222W, resolution 1680 x 1050 pix. (16:10)
Video: format
AVI 25 fps resolution 1440 x 1080 with anamorphig 16:9 aspect ratio, (near FullHD quality, 75% of FullHD pixels)
codec: FFmpeg MPEG-4
bitrate: 15000 kbps
Audio: stereo, ac 3 (near CD quality)
samplerate: 48000 Hz
bitrate: 256 kbps
Player: VLC with sharpness connected "on" (sharpness adjusted)
OS: Zorin 8,1 Core
Conversion done by using "Open Shot" video editor
Filesize: 120 Mb / min.
Using the same spec. with the FullHD resolution (1920 x 1080), sharpness option can not be used and the results can be seen from this screenshot.
CPU load is slightly slower average 60 to 65% but the picture quality is much reduced.
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In my laptop that is a HP350 with Intel Celeron(R) M CPU 440 @ 1.86 GHz, one core processor with 2 Gb RAM the results are following running with
VLC without sharpness option. (Following two pictures).
FullHD (1920 x 1080 pix.) runs, but very near 100% CPU load so there might be some problems with that resolution.
FullHD (1440 x 1080 pix.with anamorphig 16:9 aspect ratio) runs with 80% CPU load so there isn't any problems.
However a HD (1280 x 720 pix.) with reduced 5000 kbps bitrate might be better resolution format with VLC for a laptop,
using sharpness to get improved pic. quality. Processor runs then also here up to 100% as can be seen from this picture. (Filesize ca. 40 Mb / min.)
The original problem how to play the
FullHD high speed recorded (48 fps or higher) videos could not be solved. There probably is not such a player in Linux that could play that with a "normal" performance computer.
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Here are the recommendations from You Tube which formats for video and audio should be used if uploading videos there:
Advanced encoding settingsRecommended bitrates, codecs, and resolutions, and more
Container: .mp4No Edit Lists (or you may lose AV sync)
moov atom at the front of the file (Fast Start)
Audio Codec: AAC-LCChannels: Stereo or Stereo + 5.1
Sample rate 96khz or 48 khz
Video Codec: H.264Progressive scan (no interlacing)
High Profile
2 consecutive B frames
Closed GOP. GOP of half the frame rate.
CABAC
Variable bitrate. No bitrate limit required, though we offer recommended bit rates below for reference
Color Space: 4.2.0
Frame ratesFrame rates should match the source material. For example, content shot in 24fps should be encoded and uploaded at 24fps. Content recorded at 30fps should be uploaded at 30fps. Content shot in 720p60, should be uploaded at 720p60. Content at 1080i 60, should be deinterlaced, going from 60 interlaced fields per second to 30 progressive frames per second before uploading.
BitratesStandard quality uploads
Type/..Video Bitrate/...Mono Audio Bitrate/.. Stereo Audio Bitrate/..5.1 Audio Bitrate
2160p (4k).. 35-45 Mbps... 128 kbps.... 384 kbps..... 512 kbps
1440p (2k) ..10 Mbps...... 128 kbps.... 384 kbps.... 512 kbps
1080p........ 8,000 kbps... 128 kbps.... 384 kbps.... 512 kbps
720p......... 5,000 kbps... 128 kbps.... 384 kbps.... 512 kbps
480p......... 2,500 kbps... 64 kbps...... 128 kbps.... 196 kbps
360p......... 1,000 kbps... 64 kbps...... 128 kbps.... 196 kbps
High quality uploads for creators with enterprise quality internet connections
Type/..Video Bitrate/...Mono Audio Bitrate/.. Stereo Audio Bitrate/..5.1 Audio Bitrate
1080p........ 50,000 kbps... 128 kbps.. 384 kbps.. 512 kbps
720p......... 30,000 kbps... 128 kbps.. 384 kbps.. 512 kbps
480p......... 15,000 kbps... 128 kbps.. 384 kbps.. 512 kbps
360p......... 5,000 kbps..... 128 kbps.. 384 kbps.. 512 kbps
ResolutionsYouTube uses 16:9 aspect ratio players. If you are uploading a non-16:9 file, it will be processed and displayed correctly as well, with pillar boxes (black bars on the left and right) or letter boxes (black bars at the top and bottom) provided by the player. If you want to fit the player perfectly, encode at these resolutions:
2160p: 3840x2160
1440p: 2560x1440
1080p: 1920x1080
720p: 1280x720
480p: 854x480
360p: 640x360
240p: 426x240
The YouTube player automatically adds black bars so that videos are displayed correctly without cropping or stretching, no matter the size of the video or the player.
Anamorphic videos will be automatically letterboxed when shown in either 16:9 or 4:3 sized players. The player can only do this if the native aspect ratio of the video is maintained.