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27th May 2020, 16:14 | #1 | Link |
Registered User
Join Date: Nov 2018
Posts: 34
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MPEG-2 decoding issues
I'm trying to decode a MPEG2 video to AVC with those two lines:
Code:
x264-r3000-33f9e14.exe --fps 24000/1001 --force-cfr --bitrate 20669 --preset veryslow --tune film --bluray-compat --vbv-maxrate 40000 --vbv-bufsize 30000 --level 4.1 --keyint 24 --open-gop --slices 4 --colorprim "bt709" --transfer "bt709" --colormatrix "bt709" --sar 1:1 --pass 1 -o outputx.264 input.mkv x264-r3000-33f9e14.exe --fps 24000/1001 --force-cfr --bitrate 20669 --preset veryslow --tune film --bluray-compat --vbv-maxrate 40000 --vbv-bufsize 30000 --level 4.1 --keyint 24 --open-gop --slices 4 --colorprim "bt709" --transfer "bt709" --colormatrix "bt709" --sar 1:1 --pass 2 -o output.264 input.mkv Code:
Video ID : 1 Format : MPEG Video Format version : Version 2 Format profile : Main@High Format settings : CustomMatrix / BVOP Format settings, BVOP : Yes Format settings, Matrix : Custom Format settings, GOP : M=3, N=15 Codec ID : V_MPEG2 Codec ID/Info : MPEG 1 or 2 Video Duration : 1 h 50 min Bit rate mode : Variable Bit rate : 20.7 Mb/s Maximum bit rate : 35.0 Mb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Compression mode : Lossy Bits/(Pixel*Frame) : 0.416 Time code of first frame : 00:00:00:00 Time code source : Group of pictures header GOP, Open/Closed : Open GOP, Open/Closed of first frame : Closed Stream size : 15.9 GiB (91%) Default : Yes Forced : No Code:
[mpeg2video @ 00000000004eed00] ignoring pic cod ext after 0 [mpeg2video @ 0000000002296d00] ignoring pic cod ext after 0 |
27th May 2020, 20:45 | #2 | Link |
Software Developer
Join Date: Jun 2005
Location: Last House on Slunk Street
Posts: 13,248
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This message almost certainly is not from x264 itself, but from libavcodec (ffmpeg) MPEG-2 decoder.
Could be the result of a broken MPEG-2 bitstream, but does not necessarily mean you will see any "corruptions" in decoded output. Did you check the output for any noticeable issues? (I'd probably do an encode with ultra-fast settings and check the output for broken frames, just to be sure)
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