ffplay | porting ffplay and sdl2 to android , based on FFmpeg decode | Media library

I am trying to add xfade filter and the command is working but audio of second video is missing in output video.

command is -

I'm trying to convert a .ts file with this output to mkv:

So when specifying a video-filter to display current video-time in 'hms' layout, the filter appends a millisecond value after the seconds-field. I want to eliminate the milliseconds portion.

So far, my invoked cmd looks like:

Using ffmpeg I add a video overlay successfully over an origin video (origin has audio, overlay doesn't). However the audio of the origin video doesn't appear in the result video.

My requirement is to play ffplay videos as they are joined I do know we can play the one after the other using

I want to display the video before trimming it

to trim we can use 2 ways:

method 1:

I can't get ffmpeg or xvfb-run to stream the full screen to ffplay/videolan, it only captures a part of the screen.

I answered the question myself in a follow up answer, hopefully it can be useful for someone else with the same problem.

So the problem is definitely with xvfb-run, since the two following commands, still give a webm file, that only show parts of the screen

ffmpeg -f x11grab -i :99 -g 50 -b:v 4000k -maxrate 4000k -bufsize 8000k -f webm -s 384x216 "blank.webm"

xvfb-run -n 99 -a --server-args="-screen 0 1024x8000x24 -ac -nolisten tcp -dpi 96 +extension RANDR" "node index.js"

• I've tried changing ffmpeg command and xvfb-run, for example adding "-vf format=yuv420p" or "-filter:v "crop=iw-400:ih-40,scale=960:720" to ffmpeg command
• I've tried to show other applications under xvfb-run instead of puppeteer (chrome..)
• Recording screen with ffmpeg and saving it to a file, to see if there's a problem with the rtmp stream

But still no luck. That's why I'm reaching out to the stackoverflow community.

xvfb-run command

xvfb-run -n 99 -a --server-args="-screen 0 1024x8000x24 -ac -nolisten tcp -dpi 96 +extension RANDR" "node index.js"

ffmpeg command to capture xvfb-run virtual screen

ffmpeg -f x11grab -i :99 -f pulse -i default -c:v libx264 -c:a aac -g 50 -b:v 4000k -maxrate 4000k -bufsize 8000k -f flv -listen 1 rtmp://localhost:4444/stream

And finally to show the rtmp stream

ffplay -fflags -nobuffer -flags low_delay -probesize 32 -flags low_delay -analyzeduration 0 -i rtmp://localhost:4444/stream

The puppeteer script (index.js) which xfvb-runs

I am trying to use ffmpeg to downscale a video and pipe the stdout data to ffplay to play the new downsized video by piping it to ffplay on aws lambda.

This is the command I have so far, but for some reason adding a scale option is not working.

I am trying to run this command locally before I deploy it on python with subprocess command. I need the raw video to be able to save into database for streaming the data in realtime.

%ffmpeg -i sample.mp4 -vf scale=240:-2 -f mpegts -c:v copy -af aresample=async=1:first_pts=0 - | ffplay -

adding the scale optioin for some reason is saving the video as the name scale=240:-2 which does not make sense.

I'm trying to rotate videos and increase its sound as well as change itsframe rate