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2

Since bandwidth is fixed, first step to maximize quality is to full use that bandwidth so bitrate should be set to that number. Frame rate will make a modest difference, once a fixed bitrate is specified, since typically x264 places keyframes 250 frames apart and so all or most frames in a random second are delta frames, so leave that between 24 to 30. For ...


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There are a few video quality metrics available for you to use, primarily SSIM and also PSNR. You can use ffmpeg to convert the video and then compare the output. Step 1 Convert the video ffmpeg -i actioncamfile -c:v libx264 -crf 23 -c:a copy -map 0 compressed.mp4 The CRF value modulates the quality. Lower values produce better quality but larger file ...


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As you are hardcoding subtitles, the video (with the subtitles added) will be re-encoded. You can use the CRF rate control method to modulate the quality of the output. So, start with ffmpeg -i grdedFinal.mov -vf subtitles=portSbs.srt -crf 18 -c:a copy gradedFinalwithSubs.mov If the quality's not acceptable, lower that value till it is - in exchange ...


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You should upload the highest quality your tubes can afford. The current YouTube help text on uploads is misleading. It states: Your videos will process faster if you encode into a streamable file format. For more information, visit our Help Center. It contradicts what Colleen Henry, formerly of Google, now at Facebook said: Colleen Henry, Video ...



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