Recherche avancée

Sur d’autres sites (6585)

• Cross-compile ffmpeg for arm64 on x64 host machine (macOS) ?

  13 juin 2021, par waldenCalms

  I need to cross-compile ffmpeg for arm64 (M1 Macs, to be specific) from my x64 host Mac. I am able to build ffmpeg for my host architecture without issues (i.e. I have a working x64 build script and all the pre-requisites installed), but now need to modify my script to build for arm64.

  


  First of all, is this even possible / supported ? If so, how ?

  


  The official ffmpeg compilation guide doesn't mention anything helpful. I have looked at several code snippets online and tried using the following configure arguments, with no luck :

  


  --enable-cross-compile \
--arch=arm64 \


  


  I get the following error :

  


  libavutil/aarch64/bswap.h:38:13: error: invalid instruction mnemonic 'rev'


  


• Using ffmpeg ffprobe with Visual C++

  11 juillet 2015, par astracat111

  I have the following command line that gives me the duration of a video file :

  ffprobe.exe -i Video.mp4 show_entries format=duration -v quiet -of csv="p=0"

  When I run this, I get back the duration of my video successfully, running it from a command prompt. Now, I’m kind of a beginner with C++, so I’m not sure how I could get that duration to be put into a float inside of my program. I’ve looked through a lot of articles and question and answer forums online and I’ve found possible answers with...using stdout/stdin to grab the information...? I’m not sure.

  My strategy right now is to use CreateProcess() to run the process, then WaitForSingleObject(), then somehow use some command to grab the output data from the ffprobe process. Perhaps the data I’m looking for can be retrieved through the CreateProcess() function ? I feel like I’m very close, but I’m in serious need of help with this...

  As a side note, since I’m using Visual C++ Express 2010, I do not have access to MFC.

  If anyone could lead me in the right direction to this information it would be greatly appreciated.

• Get Pid Ffmpeg On Centos With Bash Script

  2 mai 2020, par Abdullah Al-Habsyi

  I was created SH script n run with cron for 3 hours. but i want update live cctv real time if not online, i want grep pid for each sh i have. if pid exist nothing to do, if pid not exist run command this.

  



  #!/bin/bash
#IP 192.168.19.6

ping -c 1 -q 192.168.19.6 >&/dev/null

if [ $? -eq 0 ]; then
    rm -rf /var/www/cctv/public_html/video/ri-2/*.ts;
    rm -rf /var/www/cctv/public_html/video/ri-2/*.m3u8
    ffmpeg -stimeout 87000000 -err_detect aggressive -fflags discardcorrupt \
    -rtsp_transport tcp -i "rtsp://admin:12345@192.168.19.6/media/video1" \
    -vf scale=320:-1 -c:v libx264 -pix_fmt yuv420p -preset:v ultrafast \
    -hls_time 10 -hls_list_size 10 -hls_delete_threshold 10 -hls_flags delete_segments -f hls \
    "/var/www/cctv/public_html/video/ri-2/simpang.m3u8" \
    -progress -stats

else
    rm -rf /var/www/cctv/public_html/video/ri-2/*.ts;
    rm -rf /var/www/cctv/public_html/video/ri-2/*.m3u8
fi