Resize a Video to Multiple Resolutions using FFmpeg.

Basic Steps to HLS Packaging using FFmpeg.Protected: FFmetrics – Free video quality measuring toolĪteme’s converged headend powers Ooredoo TVīridge Technologies Add VB440 to New Eclipse Production TruckĪmagi strengthens its presence in Northeast Asia with the launch of South Korea Operations Israeli Basketball Association is the First Basketball Association to Equally Cover Men’s and Women’s Competitions Haivision Awarded Department of Defense Information Network (DoDIN) Approval for Video Distribution Solutions PortfolioįuboTV to Announce Q3 2022 Financial Results on November 4, 2022 Varnish Software Ranks #1 in Web Acceleration Software on Latest G2 Fall 2022 Ratings IAS Selected to Provide Transparency to Netflix’s Advertising Platform No audio, no subtitles.DigiCAP and iWedia collaborate to create first ATSC 3.0-Hybrid HDMI dongle the output would only have the first video stream. In that case ffmpeg will fall back to the default mapping (because that was the only -map option we used) which tries to select the first video, first audio and first subtitle.įfmpeg -i 'input.mkv' -map 0:v:0 -map 0:a:1? -c copy 'output.mkv'Īnd no second audio it could fall back on '-map 0:v:0', i.e.

No video, no subtitles.ī.) There is no second audio. In that case the output will have exactly one audio stream. It's the default stream mapping.įfmpeg -i 'input.mkv' -map 0:a:1? -c copy 'output.mkv'Ī.) There is a second audio.

In this case ffmpeg will work as if -map 0:v:0? -map 0:a:0? -map 0:s:0? were set. If I've understood you correctly ffmpeg assumes that '-map 0:a:1?' is '-map 0:a:0' (The first audio) and because it doesn't exist it outputs the '-map 0:a:0' 2 times ? (The first time being the '-map 0:a:0 ?') No.įfmpeg -i 'input.mkv' -c copy 'output.mkv'

Ffmpeg map all audio streams