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--- wiki:using_ffprobe_to_verify_stream [2017/06/20 07:35] – [Adding ATRPMS Repository] walkeradmin
+++ wiki:using_ffprobe_to_verify_stream [2017/06/20 08:06] – [Using FFPROBE] walkeradmin
@@ Line 29: / Line 29: @@
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     vi /etc/yum.repos.d/atrpms.repo
-\\
 <file>
 [atrpms]
@@ Line 39: / Line 38: @@
 </file>
 \\
-Save the file and exit.
+Save the file and exit. (https://tecadmin.net/setup-atrpms-repository-on-centos-redhat-and-fedora/)
+\\
+\\
+==== Install FFMPEG ====
+ffprobe is part of ffmpeg, so we need to install ffmpeg to get this tool.
+\\
+    yum install ffmpeg
+\\
+Some basic ffmpeg commands
+\\
+<file>
+ffmpeg -version:            show version
+ffmpeg -formats:            show available formats
+ffmpeg -codecs:             show available codecs
+ffmpeg -decoders:           show available decoders
+ffmpeg -encoders:           show available encoders
+ffmpeg -bsfs:               show available bit stream filters
+ffmpeg -protocols:          show available protocols
+ffmpeg -filters:            show available filters
+ffmpeg -pix_fmts:           show available pixel formats
+ffmpeg -layouts:            show standard channel layouts
+ffmpeg -sample_fmts:        show available audio sample formats
+</file>
+\\
+Now the installation is done we can do a test (https://tecadmin.net/install-ffmpeg-on-centos/#)
+\\
+\\
+==== Using FFPROBE ====
+We are going to join a stream to read the stream characteristics, use the following syntax.
+\\
+    ffprobe udp://239.0.200.1:10001
+\\
+If you successfully join the stream you will get an output similar to the following example.
+\\
+<file>
+Input #0, mpegts, from 'udp://239.0.200.1:10001':
+  Duration: N/A, start: 5793.912200, bitrate: 128 kb/s
+  Program 1
+    Metadata:
+      service_name    : VSPP ABR Test
+      service_provider: Ericsson
+    Stream #0:0[0x3e9]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 25 tbr, 90k tbn, 180k tbc
+    Stream #0:1[0x7d1]: Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 128 kb/s
+</file>
+\\
+When you start ffprobe, you will likely see some errors, I am not sure what this is, but it could be errors that are generated until the first I frame is found.
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