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ffmpeg

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ffmpeg [2016/11/23 11:22] – walkeradminffmpeg [2019/11/20 21:42] (current) – walkeradmin
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-===== FFMEPG ======+===== FFMPEG ======
 ==== and FFPLay ==== ==== and FFPLay ====
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-Chris Duxbury has worked out a simple syntax we can use to extract our .ts files to .mp4 files (.mp4 is a valid container for both h.264 and HEVC steams). +==== Contents ==== 
-\\  +  *[[FFMPEG TS to MP4]]\\  
-\\  +  *[[.MOV to .MP4]]\\  
-==== FFMEPG ==== +  *[[Interlaced to Progressive]]\\  
-The following syntax will work for SPTS files (not sure about MPTS) +  *[[Rescale Video]]\\  
-\\  +  *[[FFPlay]]\\  
-   ffmpeg -probesize 50000000 -i source.ts -map 0:0 -map 0:1 -map 0:2 -c copy destination.mp4 +  *[[FFProbe]]\\ 
-\\  +
-The <color red>probesize</color> bit tells ffmpeg to look over lots of file for the I picture, otherwise on long GOP it seems to give up sometimes. (like most decoders, ffmpeg can't start to decode until it finds an I frame) +
-\\  +
-\\  +
-Using <color red>-map 0:0 -map 0:1 -map 0:1 -map 0:2</color> tells ffmpeg to select/map specified input streams to output in that order. +
-\\  +
-\\  +
-Using <color red>-c copy</color> mark all the streams to be just copied to the output +
-\\  +
-\\  +
-==== FFPLAY ==== +
-FFPLAY comes bundled with the ffmpeg download. The ffplay is a simple to use command line app for playing the extracted streams that you have just created. +
-\\  +
-\\  +
-The simple use of fflplay is just: +
-\\  +
-    ffplay filename.mp4 +
-\\  +
-However, the issue with UHD streams is that they are larger than most monitors, so it is generally necessary to either rescale the output, or force it to fullscreen. +
-\\  +
-\\  +
-To replay a video in a window. +
-\\  +
-    ffplay -i video.mpg -vf scale=800x600 +
-     +
-    This will replay the selected file at a window size of 800x600. Remember, currently (End 2016)  +
-    UHD streams play very poorly and you will only get 1 or 2 frames per second.  +
-\\  +
-To replay a video full screen. +
-\\  +
-    ffplay -i video.mpg -vs +
-     +
-    This will replay the video at fullscreen resolution. +
-\\  +
-\\  +
-==== FFPROBE ==== +
-FFPROBE allows the inspection of a file for some basic information. ffprobe is useful to analyse a .ts file before extraction to see what streams are present, the PIDs etc. +
-\\  +
-    ffproble filename.ts +
-     +
-    Input #0, mpegts, from 'AVP4000_HEVC_SDR.ts': +
-      Duration: 00:01:01.45, start: 63552.709811, bitrate: 24918 kb/s +
-      Program 1 +
-        Metadata: +
-          service_name    : AVPUHD +
-          service_provider: Ericsson +
-        Stream #0:0[0x3e9]: Video: hevc (Main 10) ([36][0][0][0] / 0x0024), yuv420p1 +
-    0le(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 50 tbc +
-        Stream #0:1[0x7d1](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 192 kb/s+
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