New answers tagged video-conversion
To mostly match the MP4 created by GTM, but with no padding, I'd use ffmpeg -i meeting.g2m -profile:v baseline -c:v libx264 -crf 23 -r 30 -pix_fmt yuv420p -c:a aac -b:a 64k -ar 16k -ac 1 output.mp4 Some notes: The MP4 produced by GTM is variable frame rate, which FFmpeg does not do for MP4 output. The notional frame rate reported by the GTM MP4 is ...
See this blog, too: https://spreadys.wordpress.com/2013/05/18/portable-smplayer-with-fjht-imm4imm5-and-imm6-codecs-included/ the link is taken from this reddit thread: https://www.reddit.com/r/techsupport/comments/1un7cx/converting_this_imm5_avi_file_into_something/ In particular, I've installed the mm4,5 and 6 codec and played the video with Windows ...
I want to change dimensions of multiple mp4 files in one go You can use a for command to loop and convert the files one at a time. Something like the following. command line: for /f %i in (mylist.txt) do FFmpeg -I "%i" -vf scale=460:690 "output_%i" batch file: for /f %%i in (mylist.txt) do FFmpeg -I "%%i" -vf scale=460:690 "output_%%i" Further ...
It may be due to the pixel format or atom placement. Try ffmpeg -i INPUT.y4m -c:v libx264 -preset ultrafast -qp 0 -pix_fmt yuv420p -movflags +faststart OUTPUT.mp4
Yes, see http://apple.stackexchange.com/questions/235376/how-do-i-add-vtt-subtitles-to-a-mp4-video-to-view-on-an-iphone-ios, https://trac.ffmpeg.org/wiki/HowToBurnSubtitlesIntoVideo and https://en.wikibooks.org/wiki/FFMPEG_An_Intermediate_Guide/subtitle_options. That is for subtitles but it gives examples. Try ffmpeg -i input.mkv -map 0:v -map 0:a -c copy ...
Try this, (although you don't mention what's not working) ffmpeg -s 480x270 -framerate 30 -i left.yuv -s 480x270 -framerate 30 -i right.yuv \ -filter_complex "[0:v:0]pad=iw+10:ih:color=white[l]; \ [l][1:v:0]hstack[v]" -map "[v]" left-right.YUV
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