I've been successful at getting VLC to stream a x264 encoded file from a network file share to an old chromecast (which mine doesn't support hevc / x265 directly) using the commands below.

vlc -vv --sout "#chromecast" --sout-chromecast-ip= --sout-chromecast-conversion-quality=0 --demux-filter=demux_chromecast "/home/vid/nfst/video1_x264.mp4"

I'm trying to do the same thing with an HEVC / x265 file but it looks like it needs to be trans-coded "in real-time" before it gets to the chromecast. Does anybody know how I can go about doing this with VLC using command line syntax?

Note: I don't want to create another separate x264 file. I wan't to trans-code the x265 file "in-real-time" to a x264 format and have it somehow streamed / played on the chromecast using VLC.

PS: I have tried casting using the VLC GUI but my OLD chromecast doesn't support HEVC / x265 files. The audio in the file does play but the hevc / x265 video shows up as just a black screen on the chromecast.

PPS: I'm using VLC media player Vetinari (revision running Ubuntu 18.04 64bit.

2 Answers 2


I don't know if you still need it, but I was just dealing with this and maybe it will help someone else.

As my sout string I use: #transcode{venc=x264{preset=ultrafast},vcodec=h264,threads=1}:chromecast{ip=,conversion-quality=0} Notice the colon between transcode and chromecast. I barely know anything about VLC or video transcoding, but this looks somewhat like piping the transcoder output to the chromecast thing.

Some observations

  • Apparently the venc=x264{preset=ultrafast}uses my GPU to aid the CPU in transcoding.

  • threads=1 is there so the cpu isn't at 100% usage. Increasing this could help if you have stuttering issues.

  • With an Intel i5 4590 and a RX580, on Windows 10, I'm real-time transcoding and casting a 1080p HEVC H.265 (40 minute, 1.04 GB file) with average 40% and 15% CPU and GPU usage respectively.

  • Beware that pausing or jumping time can be really glitchy.

  • Thank you very much Lucas! I have been trying to get a fully working streaming of some nasty hevc in an mkv, and this works!
    – reim
    Jan 6 at 22:05

you can use ffmpeg to turn the video to h264.

ffmpeg -i input.mp4 -c:v libx264 -preset slower -crf 28 -c:a copy -maxrate 320 -minrate 20 output.mp4 You can change maxrate minrate preset and the crf to get the quality nice.

for 720p I'd suggest a maxrate of 1500-2500 depending on if the video has a lot of movement.

for crf lower is better quality at the expense of more computational power needed to be done in a reasonable time.

  • Thanks. This Line looks like it wants to fully convert the file first. I'm trying to have VLC transcode it "in real-time" while playing the file using the chromecast. I don't want to create a fully / separate x264 converted file. How would I integrate this line to my VLC line to do that if it's possible?
    – Rick T
    Aug 5, 2019 at 14:27

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.