stoyanovgeorge / ffmpeg Goto Github PK

Would it be possible for you to include compilation support for Blackmagic Decklink SDK.

Thanks.

I downloaded your script and tried to install it on a fresh, new install of Ubuntu server 18.04 64-bit.
It gives me this error: ERROR: x265 not found using pkg-config - and tells me to "Include the log file "ffbuild/config.log" produced by configure as this will help solve the problem.", but I can't find that config.log or ffbuild anywhere.
I tried the automated script and got the same errors.
It never came up with the "reboot" option/command. It just ends with that error, how to report it on the mailing list/IRC then asks if you want to remove the install directory.
Is there something I've done wrong?
I am a visually impaired user and I'm trying to install this on a Dell PowerEdge server.

Thanks in advance,
Flip

Hi there!

ffmpeg -i input.mkv \
    -map 0:0 -map 0:1 -map 0:1 -map 0:3 \
    -c:v copy \
    -c:a:0 libmp3lame -b:a:0 128k \
    -c:a:1 libfaac -b:a:1 96k \
    -c:s copy \
    output.mkv

Should all this be put inside a script file (bat file)?
If I paste it in the shell (windows) I get errors, one error per line

Thank you

The Intel SVT encoders offer significant performance improvements. Would be great to see them integrated into the compile.

I liked your suggestions on https://github.com/stoyanovgeorge/ffmpeg/wiki/How-to-Find-and-Fix-Corruptions-in-FFMPEG

Here are some useful stuff I've found:

1. This is well known: -err_detect ignore_err it makes ffmpeg continue to process a file, along with -codec copy it can skip bad-frames and create a playable stream with minimal (no) processing (very fast).
2. also very fast are the mux-filters you can switch-ON with -flags and -fflags: -flags "-output_corrupt" -fflags "+discardcorrupt" (its best to wrap arguments with -/+ so the operation-system pass them well to the ffmpeg command-line-processor). Mux-filters are very fast and do not need to re-encode the streams, just copy.
3. Using the mkv "container" in the output generates a "more tolerable" result for some reason. b.t.w., YouTube supports mkv files. ffmpeg -hide_banner -strict "experimental" -y -threads 16 -flags "-output_corrupt" -fflags "+discardcorrupt" -err_detect ignore_err -i input.mp4 -codec copy output.mkv.
4. With encoding: I've found that when converting older formats (AVI, FLV,3GP) to mp4, the frames might be in weird height/length and mp4 stream must have a frame-size (height and width) that is dividable by 2 otherwise the encoding or playing is failing and the result is often squished (I use pad filter for fixing that, preserving the original perspective bringing the video to 16:9 ratio which works nicely on wide screen without stretching the original dimensions), when content is cut without re-encoding result might creates a weird frames timestamps and unplayable skips (I use setpts=PTS-STARTPTS for that), to improve compression reducing frame-difference and noise I use hqdn3d, and finally I found that a lot of improvements in H.265 format is capable of producing a smaller filesize (in same quality) while using the CPU more efficiently, I usually copy the audio as is saving some time. The mkv container works well with it. -c:v libx265 -c:a copy -crf 26 -preset ultrafast ---- CRF 28 (h.265) === CRF 23 (h.264), 1/2 size.

   The command-line looks something like that: call ffmpeg -hide_banner -strict "experimental" -y -threads 16 -flags "-output_corrupt" -fflags "+discardcorrupt" -err_detect ignore_err -i input.mp4 -c:v libx265 -c:a copy -crf 26 -preset ultrafast -vf "fifo,setpts=PTS-STARTPTS,pad=width=ih*16/9:height=ih:x=(ow-iw)/2:y=(oh-ih)/2:color=#00000000,scale=-2:1080,hqdn3d" output.mkv

vmaf fails.
Removed it from the both scripts.
FFMPEG still fails to build.
SRT and other plugins fail when build and configured with configuration script and make.
AWS EC2.