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FFmpeg using png with tranparency and exclusion blending mode

27 août 2016, par moorej

I’m trying to use the exclusion blending mode to blend together a video and a png with transparency. I’ve looked around quite a bit but I can’t find a solution that works for me. Here’s the ffmpeg command :

ffmpeg -i movie.mkv -i text_white_bg_trans.png -filter_complex\

  "[1:v]setsar=sar=1,format=rgba[txt]; [0:v]format=rgba[mo]; [mo][txt]blend=all_mode='exclusion'"  out_exclusion.mkv

Edit : and the console output :

ffmpeg version 3.0.2 Copyright (c) 2000-2016 the FFmpeg developers

  built with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)

  configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-avresample --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libsoxr --enable-libspeex --enable-libass --enable-libbluray --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --disable-indev=jack --disable-outdev=xv --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-vda --enable-videotoolbox --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid

  libavutil      55. 17.103 / 55. 17.103

  libavcodec     57. 24.102 / 57. 24.102

  libavformat    57. 25.100 / 57. 25.100

  libavdevice    57.  0.101 / 57.  0.101

  libavfilter     6. 31.100 /  6. 31.100

  libavresample   3.  0.  0 /  3.  0.  0

  libswscale      4.  0.100 /  4.  0.100

  libswresample   2.  0.101 /  2.  0.101

  libpostproc    54.  0.100 / 54.  0.100

Input #0, matroska,webm, from 'movie.mkv':

  Metadata:

    ENCODER         : Lavf57.25.100

  Duration: 00:00:11.88, start: 0.000000, bitrate: 5143 kb/s

    Stream #0:0: Video: h264 (High), yuv420p, 1640x1232, SAR 1:1 DAR 205:154, 25 fps, 25 tbr, 1k tbn, 50 tbc (default)

    Metadata:

      ENCODER         : Lavc57.24.102 libx264

      DURATION        : 00:00:11.880000000

Input #1, png_pipe, from 'text_white_bg_trans.png':

  Duration: N/A, bitrate: N/A

    Stream #1:0: Video: png, rgba(pc), 1640x1232, 25 tbr, 25 tbn, 25 tbc

File 'out_exclusion.mkv' already exists. Overwrite ? [y/N] y

No pixel format specified, yuv444p for H.264 encoding chosen.

Use -pix_fmt yuv420p for compatibility with outdated media players.

[libx264 @ 0x7fb10a01e200] using SAR=1/1

[libx264 @ 0x7fb10a01e200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX

[libx264 @ 0x7fb10a01e200] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit

[libx264 @ 0x7fb10a01e200] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00

Output #0, matroska, to 'out_exclusion.mkv':

  Metadata:

    encoder         : Lavf57.25.100

    Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 1640x1232 [SAR 1:1 DAR 205:154], q=-1--1, 25 fps, 1k tbn, 25 tbc (default)

    Metadata:

      encoder         : Lavc57.24.102 libx264

    Side data:

      unknown side data type 10 (24 bytes)

Stream mapping:

  Stream #0:0 (h264) -> format

  Stream #1:0 (png) -> setsar

  blend -> Stream #0:0 (libx264)

Press [q] to stop, [?] for help

frame=   24 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=  frame=   47 fps= 40 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=  frame=   61 fps= 36 q=28.0 size=      96kB time=00:00:00.12 bitrate=6567.3kbitsframe=   70 fps= 32 q=28.0 size=     264kB time=00:00:00.48 bitrate=4513.9kbitsframe=   83 fps= 30 q=28.0 size=     498kB time=00:00:01.00 bitrate=4079.5kbitsframe=   95 fps= 29 q=28.0 size=     691kB time=00:00:01.48 bitrate=3827.5kbitsframe=  106 fps= 28 q=28.0 size=     896kB time=00:00:01.92 bitrate=3823.7kbitsframe=  118 fps= 27 q=28.0 size=    1132kB time=00:00:02.40 bitrate=3863.7kbitsframe=  130 fps= 26 q=28.0 size=    1338kB time=00:00:02.88 bitrate=3806.1kbitsframe=  142 fps= 26 q=28.0 size=    1588kB time=00:00:03.36 bitrate=3871.7kbitsframe=  154 fps= 25 q=28.0 size=    1808kB time=00:00:03.84 bitrate=3856.9kbitsframe=  166 fps= 25 q=28.0 size=    2062kB time=00:00:04.32 bitrate=3910.9kbitsframe=  178 fps= 24 q=28.0 size=    2328kB time=00:00:04.80 bitrate=3972.8kbitsframe=  190 fps= 24 q=28.0 size=    2620kB time=00:00:05.28 bitrate=4064.7kbitsframe=  203 fps= 24 q=28.0 size=    2886kB time=00:00:05.80 bitrate=4076.0kbitsframe=  215 fps= 24 q=28.0 size=    3132kB time=00:00:06.28 bitrate=4085.9kbitsframe=  226 fps= 24 q=28.0 size=    3357kB time=00:00:06.72 bitrate=4092.5kbitsframe=  238 fps= 24 q=28.0 size=    3589kB time=00:00:07.20 bitrate=4083.9kbitsframe=  250 fps= 23 q=28.0 size=    3794kB time=00:00:07.68 bitrate=4047.3kbitsframe=  260 fps= 23 q=28.0 size=    3978kB time=00:00:08.08 bitrate=4032.7kbitsframe=  272 fps= 23 q=28.0 size=    4212kB time=00:00:08.56 bitrate=4031.0kbitsframe=  284 fps= 23 q=28.0 size=    4453kB time=00:00:09.04 bitrate=4035.3kbitsframe=  295 fps= 23 q=28.0 size=    4632kB time=00:00:09.48 bitrate=4002.9kbitsframe=  297 fps= 20 q=-1.0 Lsize=    5559kB time=00:00:11.80 bitrate=3859.4kbits/s speed=0.808x    

video:5556kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.053747%

[libx264 @ 0x7fb10a01e200] frame I:2     Avg QP:21.70  size: 56001

[libx264 @ 0x7fb10a01e200] frame P:178   Avg QP:23.12  size: 24833

[libx264 @ 0x7fb10a01e200] frame B:117   Avg QP:25.78  size:  9886

[libx264 @ 0x7fb10a01e200] consecutive B-frames: 29.3% 49.8% 14.1%  6.7%

[libx264 @ 0x7fb10a01e200] mb I  I16..4:  9.5% 75.0% 15.5%

[libx264 @ 0x7fb10a01e200] mb P  I16..4:  4.0% 14.8%  1.0%  P16..4: 43.3% 12.0%  4.5%  0.0%  0.0%    skip:20.4%

[libx264 @ 0x7fb10a01e200] mb B  I16..4:  0.6%  1.9%  0.1%  B16..8: 48.5%  4.2%  0.3%  direct: 0.6%  skip:43.8%  L0:42.5% L1:55.6% BI: 1.9%

[libx264 @ 0x7fb10a01e200] 8x8 transform intra:74.8% inter:85.5%

[libx264 @ 0x7fb10a01e200] coded y,u,v intra: 31.3% 0.0% 0.0% inter: 15.0% 0.0% 0.0%

[libx264 @ 0x7fb10a01e200] i16 v,h,dc,p: 30% 32% 13% 25%

[libx264 @ 0x7fb10a01e200] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 22% 32%  3%  4%  3%  6%  3%  3%

[libx264 @ 0x7fb10a01e200] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 33% 16%  3%  4%  3%  9%  4%  2%

[libx264 @ 0x7fb10a01e200] Weighted P-Frames: Y:0.0% UV:0.0%

[libx264 @ 0x7fb10a01e200] ref P L0: 72.2% 17.9%  7.5%  2.5%

[libx264 @ 0x7fb10a01e200] ref B L0: 90.9%  8.6%  0.5%

[libx264 @ 0x7fb10a01e200] ref B L1: 98.6%  1.4%

[libx264 @ 0x7fb10a01e200] kb/s:3830.94

Edit : Here’s a frame from the output.

The output video is B&W rather than the original color (not sure why). The rectangle in the image is located where there is a block of text on a png with a transparent background. The png is the same size as the video.

I’m expecting something more like this :

@Mulvya suggestion fixed the issue with color but I’m still seeing some problems with transparency being handled. I’m attaching a few different images below that each create different problems. All created in Photoshop CC (therein may lie the problem).

A transparent background with a separate text layer that is then exported by Save->png, Photoshop appears to merge these two layers but differently than when "merge layers" is chosen before export. The exported image looks like the B&W image I posted above but with color.

The in the second I merge the layers before exporting. It appears the entire image is treated as white.

In the third I draw "hello" on a transparent layer with a "soft" brush using different grays then export. Transparent areas are rendered as white, gray or translucent areas opaque or with a strange dithering "effect."

It seems I’m moving outside the realm of StackOverflow, but I’m not sure where this post would be better suited.
1

2

3

FFmpeg RTSP crash

19 septembre 2016, par bot1131357

I am trying to rtsp stream between two consoles on my computer.

On console 1 I have :

ffmpeg -rtbufsize 100M -re -f dshow -s 320x240 -i video="BisonCam, NB Pro" -r 10 -an -f rtsp -rtsp_transport tcp rtsp://127.0.0.1:8554/demo

On console 2 I have :

ffplay -rtsp_flags listen -i rtsp://127.0.0.1:8554/demo

When I run execute both commands, my webcam LED lights up. But then immediately after ffmpeg crashes. Has anyone encountered the same thing ? I could really use some help here.

This is my ffmpeg configuration on a Windows 10 machine :

ffmpeg version N-81391-g2a3720b Copyright (c) 2000-2016 the FFmpeg developers

  built with gcc 5.4.0 (GCC)

  configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib

  libavutil      55. 29.100 / 55. 29.100

  libavcodec     57. 54.100 / 57. 54.100

  libavformat    57. 47.101 / 57. 47.101

  libavdevice    57.  0.102 / 57.  0.102

  libavfilter     6. 52.100 /  6. 52.100

  libswscale      4.  1.100 /  4.  1.100

  libswresample   2.  1.100 /  2.  1.100

  libpostproc    54.  0.100 / 54.  0.100

Hyper fast Audio and Video encoder

usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...



Use -h to get full help or, even better, run 'man ffmpeg'

Update

I tried to stream from a video file, just to be sure that the issue is not related to the webcam.

#Console 1

ffmpeg -i out.mp4 -f rtsp -rtsp_transport tcp rtsp://localhost:8888/live.sdp



#Console 2

ffplay -rtsp_flags listen rtsp://localhost:8888/live.sdp?tcp

The output for both consoles are as follows :

Console 1 :

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.47.101

  Duration: 00:01:02.57, start: 0.000000, bitrate: 172 kb/s

    Stream #0:0(und): Video: h264 (High 4:2:2) (avc1 / 0x31637661), yuv422p, 320x240, 169 kb/s, 30 fps, 30 tbr, 10000k tbn, 60 tbc (default)

    Metadata:

      handler_name    : VideoHandler

[rtsp @ 00000000024c1700] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.

Output #0, rtsp, to 'rtsp://localhost:8888/live.sdp':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.47.101

    Stream #0:0(und): Video: mpeg4, yuv420p, 320x240, q=2-31, 200 kb/s, 30 fps, 90k tbn, 30 tbc (default)

    Metadata:

      handler_name    : VideoHandler

      encoder         : Lavc57.54.100 mpeg4

    Side data:

      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1

Stream mapping:

  Stream #0:0 -> #0:0 (h264 (native) -> mpeg4 (native))

Press [q] to stop, [?] for help

Console 2 :

[rtsp @ 00000000001ccde0] WARNING: Path /live.sdp differs from expected /live.sdp?tcp

    Last message repeated 1 times

[rtsp @ 00000000001ccde0] Updating control URI to rtsp://localhost:8888/live.sdp

[rtsp @ 00000000001ccde0] Could not find codec parameters for stream 0 (Video: mpeg4 (Simple Profile), none, 320x240 [SAR 1:1 DAR 4:3]): unspecified pixel format

Consider increasing the value for the 'analyzeduration' and 'probesize' options

Input #0, rtsp, from 'rtsp://localhost:8888/live.sdp?tcp':

  Metadata:

    title           : No Name

  Duration: N/A, bitrate: N/A

    Stream #0:0: Video: mpeg4 (Simple Profile), none, 320x240 [SAR 1:1 DAR 4:3], 30 tbr, 90k tbn, 30 tbc

    nan M-V:    nan fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0

The same crash happened with ffmpeg.exe, and ffplay continued waiting for data. I tried the same commands on a Linux virtual machine, and it worked fine.

Any ideas ?

Update

Here’s what I’ve got from gdb :

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.47.101

  Duration: 00:01:02.57, start: 0.000000, bitrate: 172 kb/s

    Stream #0:0(und): Video: h264 (High 4:2:2) (avc1 / 0x31637661), yuv422p, 320x240, 169 kb/s, 30 fps, 30 tbr, 10000k tbn, 60 tbc (default)

    Metadata:

      handler_name    : VideoHandler

[New Thread 15408.0x3f28]

[New Thread 15408.0x86c]

[New Thread 15408.0x23c8]

[New Thread 15408.0xf48]

[New Thread 15408.0x354c]

[New Thread 15408.0xf24]

[New Thread 15408.0x1e4c]

[New Thread 15408.0x257c]

[New Thread 15408.0x22a4]

[New Thread 15408.0xc88]

[New Thread 15408.0x40bc]

[New Thread 15408.0x1520]

[New Thread 15408.0x2584]

[New Thread 15408.0x1a64]

[New Thread 15408.0x3934]

[New Thread 15408.0x4010]

[New Thread 15408.0x3d28]

[New Thread 15408.0x288c]

[New Thread 15408.0x1e50]

[New Thread 15408.0x630]

[New Thread 15408.0x4128]

[New Thread 15408.0x3fa0]

[New Thread 15408.0x20ec]

[New Thread 15408.0x4bcc]

[New Thread 15408.0x17b4]

[New Thread 15408.0x1204]

[New Thread 15408.0x2dc8]

[rtsp @ 0000000000e458e0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.

[New Thread 15408.0x1d14]

Output #0, rtsp, to 'rtsp://localhost:8888/live.sdp':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.47.101

    Stream #0:0(und): Video: mpeg4, yuv420p, 320x240, q=2-31, 200 kb/s, 30 fps, 90k tbn, 30 tbc (default)

    Metadata:

      handler_name    : VideoHandler

      encoder         : Lavc57.54.100 mpeg4

    Side data:

      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1

Stream mapping:

  Stream #0:0 -> #0:0 (h264 (native) -> mpeg4 (native))

Press [q] to stop, [?] for help



Program received signal SIGSEGV, Segmentation fault.

0x00007ff82d95292f in avpriv_mpegts_parse_close () from E:\Dev\Library\ffmpeg-20160819-2a3720b-win64-shared\bin\avformat-57.dll

And the backtrace :

(gdb) bt

#0  0x00007ff82d95292f in avpriv_mpegts_parse_close () from E:\Dev\Library\ffmpeg-20160819-2a3720b-win64-shared\bin\avformat-57.dll

#1  0x00007ff82d956a1b in avformat-57!av_get_output_timestamp () from E:\Dev\Library\ffmpeg-20160819-2a3720b-win64-shared\bin\avformat-57.dll

#2  0x00007ff82d9a5dbe in ff_rtsp_parse_line () from E:\Dev\Library\ffmpeg-20160819-2a3720b-win64-shared\bin\avformat-57.dll

#3  0x00007ff82d955e6d in avformat-57!av_interleaved_write_frame () from E:\Dev\Library\ffmpeg-20160819-2a3720b-win64-shared\bin\avformat-57.dll

#4  0x000000014001af78 in ?? ()

#5  0x000000014001bda9 in ?? ()

#6  0x000000014001e642 in ?? ()

#7  0x00000001400201f1 in ?? ()

#8  0x000000014004bd47 in ?? ()

#9  0x00000001400013ed in ?? ()

#10 0x000000014000152b in ?? ()

#11 0x00007ff85e2b8102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#12 0x00007ff85edac264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#13 0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)

(gdb)

Update 2

Here’s using ffmpeg_g.exe

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out.mp4':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.47.101

  Duration: 00:01:02.57, start: 0.000000, bitrate: 172 kb/s

    Stream #0:0(und): Video: h264 (High 4:2:2) (avc1 / 0x31637661), yuv422p, 320x240, 169 kb/s, 30 fps, 30 tbr, 10000k tbn, 60 tbc (default)

    Metadata:

      handler_name    : VideoHandler

[New Thread 14052.0x3560]

[New Thread 14052.0x24b4]

[New Thread 14052.0x3554]

[New Thread 14052.0x1a3c]

[New Thread 14052.0x2e64]

[New Thread 14052.0xd0c]

[New Thread 14052.0x29e4]

[New Thread 14052.0x3724]

[New Thread 14052.0x36f8]

[New Thread 14052.0x36f0]

[New Thread 14052.0x78]

[New Thread 14052.0x1578]

[New Thread 14052.0x36a0]

[New Thread 14052.0x3688]

[New Thread 14052.0x369c]

[New Thread 14052.0x1f84]

[New Thread 14052.0x2094]

[New Thread 14052.0x2f14]

[New Thread 14052.0x2c54]

[New Thread 14052.0x3624]

[New Thread 14052.0x2d44]

[New Thread 14052.0x3424]

[New Thread 14052.0x1dd4]

[New Thread 14052.0x20c4]

[New Thread 14052.0x34d8]

[New Thread 14052.0x34e4]

[New Thread 14052.0x3528]

[rtsp @ 0000000000f75a80] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.

[New Thread 14052.0x3564]

Output #0, rtsp, to 'rtsp://localhost:8888/live.sdp':

  Metadata:

    major_brand     : isom

    minor_version   : 512

    compatible_brands: isomiso2avc1mp41

    encoder         : Lavf57.47.101

    Stream #0:0(und): Video: mpeg4, yuv420p, 320x240, q=2-31, 200 kb/s, 30 fps, 90k tbn, 30 tbc (default)

    Metadata:

      handler_name    : VideoHandler

      encoder         : Lavc57.54.100 mpeg4

    Side data:

      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1

Stream mapping:

  Stream #0:0 -> #0:0 (h264 (native) -> mpeg4 (native))

Press [q] to stop, [?] for help



Program received signal SIGSEGV, Segmentation fault.

0x00007ffeecd8292f in avpriv_mpegts_parse_close ()

   from E:\Dev\Library\ffmpeg-20160819-2a3720b-win64-shared\bin\avformat-57.dll

(gdb) bt

#0  0x00007ffeecd8292f in avpriv_mpegts_parse_close ()

   from E:\Dev\Library\ffmpeg-20160819-2a3720b-win64-shared\bin\avformat-57.dll

#1  0x00007ffeecd86a1b in avformat-57!av_get_output_timestamp ()

   from E:\Dev\Library\ffmpeg-20160819-2a3720b-win64-shared\bin\avformat-57.dll

#2  0x00007ffeecdd5dbe in ff_rtsp_parse_line ()

   from E:\Dev\Library\ffmpeg-20160819-2a3720b-win64-shared\bin\avformat-57.dll

#3  0x00007ffeecd85e6d in avformat-57!av_interleaved_write_frame

    ()

   from E:\Dev\Library\ffmpeg-20160819-2a3720b-win64-shared\bin\avformat-57.dll

#4  0x000000014001af78 in ?? ()

#5  0x000000014001bda9 in ?? ()

#6  0x000000014001e642 in ?? ()

#7  0x00000001400201f1 in ?? ()

#8  0x000000014004bd47 in ?? ()

#9  0x00000001400013ed in ?? ()

---Type <return> to continue, or q <return> to quit---  

</return></return>

Update 3

After building my own ffmpeg using the --enable-debug flag, I’m back at it again. Still getting the same error though. Any ideas ? At this point, it seems like there’s something wrong with my computer settings.

ffmpeg version N-81392-ga453bbb Copyright (c) 2000-2016 the FFmpeg developers

  built with gcc 5.3.1 (GCC) 20160211

  configuration: --prefix=/home/ytan/Dev/build-mingw/ffmpeg/ --enable-cross-compile --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw64 --pkg-config-flags=--static --enable-shared --disable-static --enable-libvpx --enable-libvorbis --enable-libmp3lame --enable-openssl --enable-pic --enable-debug --extra-ldlibflags='-static -pthread'

  libavutil      55. 29.100 / 55. 29.100

  libavcodec     57. 54.100 / 57. 54.100

  libavformat    57. 47.101 / 57. 47.101

  libavdevice    57.  0.102 / 57.  0.102

  libavfilter     6. 52.100 /  6. 52.100

  libswscale      4.  1.100 /  4.  1.100

  libswresample   2.  1.100 /  2.  1.100

[New Thread 6352.0x1e6c]

[New Thread 6352.0x12fc]

[New Thread 6352.0x1f70]

[New Thread 6352.0x17b0]

[New Thread 6352.0xdac]

Input #0, dshow, from 'video=BisonCam, NB Pro':

  Duration: N/A, start: 377578.440000, bitrate: N/A

    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 320x240, 30 fps, 30 tbr, 10000k tbn, 10000k tbc

[New Thread 6352.0x544]

[New Thread 6352.0x1d00]

[New Thread 6352.0x1f14]

[New Thread 6352.0x1bb0]

[New Thread 6352.0xf08]

[New Thread 6352.0x7c8]

[New Thread 6352.0x12d0]

[New Thread 6352.0x504]

[New Thread 6352.0x1a74]

[libvpx @ 0000000002f0dc40] v1.6.0-384-g4a25b59

[rtsp @ 0000000002f0aac0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.

[New Thread 6352.0x11dc]

Output #0, rtsp, to 'rtsp://127.0.0.1:8554/demo':

  Metadata:

    encoder         : Lavf57.47.101

    Stream #0:0: Video: vp8 (libvpx), yuv420p, 320x240, q=-1--1, 100 kb/s, 10 fps, 90k tbn, 10 tbc

    Metadata:

      encoder         : Lavc57.54.100 libvpx

    Side data:

      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1

Stream mapping:

  Stream #0:0 -> #0:0 (rawvideo (native) -> vp8 (libvpx))

Press [q] to stop, [?] for help



Program received signal SIGSEGV, Segmentation fault.

0x00007ff894fd08af in avpriv_mpegts_parse_close () from E:\Dev\Library\ffmpeg\bin\avformat-57.dll

(gdb) bt

#0  0x00007ff894fd08af in avpriv_mpegts_parse_close () from E:\Dev\Library\ffmpeg\bin\avformat-57.dll

#1  0x00007ff894fd499b in avformat-57!av_get_output_timestamp () from E:\Dev\Library\ffmpeg\bin\avformat-57.dll

#2  0x00007ff89502dbae in ff_rtsp_parse_line () from E:\Dev\Library\ffmpeg\bin\avformat-57.dll

#3  0x00007ff894fd3ded in avformat-57!av_interleaved_write_frame () from E:\Dev\Library\ffmpeg\bin\avformat-57.dll

#4  0x000000014001ab18 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)

(gdb) thread apply all bt



Thread 19 (Thread 6352.0x11dc):

#0  0x00007ff8c4804e74 in ntdll!ZwRemoveIoCompletion () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c0663e49 in Tcpip4_WSHStringToAddress () from C:\Windows\system32\mswsock.dll

#2  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#3  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#4  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 18 (Thread 6352.0x1a74):

#0  0x00007ff8c4808404 in ntdll!ZwWaitForAlertByThreadId () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c47c7810 in ntdll!RtlSleepConditionVariableCS () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c0e2bb47 in SleepConditionVariableCS () from C:\Windows\system32\KernelBase.dll

#3  0x00007ff896f59420 in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#4  0x00007ff896f5935f in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#5  0x00007ff8c38ab097 in msvcrt!_beginthreadex () from C:\Windows\system32\msvcrt.dll

#6  0x00007ff8c38ab16c in msvcrt!_endthreadex () from C:\Windows\system32\msvcrt.dll

#7  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#8  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#9  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 17 (Thread 6352.0x504):

#0  0x00007ff8c4808404 in ntdll!ZwWaitForAlertByThreadId () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c47c7810 in ntdll!RtlSleepConditionVariableCS () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c0e2bb47 in SleepConditionVariableCS () from C:\Windows\system32\KernelBase.dll

#3  0x00007ff896f59420 in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#4  0x00007ff896f5935f in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#5  0x00007ff8c38ab097 in msvcrt!_beginthreadex () from C:\Windows\system32\msvcrt.dll

---Type <return> to continue, or q <return> to quit---

#6  0x00007ff8c38ab16c in msvcrt!_endthreadex () from C:\Windows\system32\msvcrt.dll

#7  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#8  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#9  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 16 (Thread 6352.0x12d0):

#0  0x00007ff8c4808404 in ntdll!ZwWaitForAlertByThreadId () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c47c7810 in ntdll!RtlSleepConditionVariableCS () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c0e2bb47 in SleepConditionVariableCS () from C:\Windows\system32\KernelBase.dll

#3  0x00007ff896f59420 in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#4  0x00007ff896f5935f in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#5  0x00007ff8c38ab097 in msvcrt!_beginthreadex () from C:\Windows\system32\msvcrt.dll

#6  0x00007ff8c38ab16c in msvcrt!_endthreadex () from C:\Windows\system32\msvcrt.dll

#7  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#8  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#9  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 15 (Thread 6352.0x7c8):

#0  0x00007ff8c4808404 in ntdll!ZwWaitForAlertByThreadId () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c47c7810 in ntdll!RtlSleepConditionVariableCS () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c0e2bb47 in SleepConditionVariableCS () from C:\Windows\system32\KernelBase.dll

#3  0x00007ff896f59420 in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#4  0x00007ff896f5935f in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#5  0x00007ff8c38ab097 in msvcrt!_beginthreadex () from C:\Windows\system32\msvcrt.dll

#6  0x00007ff8c38ab16c in msvcrt!_endthreadex () from C:\Windows\system32\msvcrt.dll

#7  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#8  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

---Type <return> to continue, or q <return> to quit---

#9  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 14 (Thread 6352.0xf08):

#0  0x00007ff8c4808404 in ntdll!ZwWaitForAlertByThreadId () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c47c7810 in ntdll!RtlSleepConditionVariableCS () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c0e2bb47 in SleepConditionVariableCS () from C:\Windows\system32\KernelBase.dll

#3  0x00007ff896f59420 in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#4  0x00007ff896f5935f in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#5  0x00007ff8c38ab097 in msvcrt!_beginthreadex () from C:\Windows\system32\msvcrt.dll

#6  0x00007ff8c38ab16c in msvcrt!_endthreadex () from C:\Windows\system32\msvcrt.dll

#7  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#8  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#9  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 13 (Thread 6352.0x1bb0):

#0  0x00007ff8c4808404 in ntdll!ZwWaitForAlertByThreadId () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c47c7810 in ntdll!RtlSleepConditionVariableCS () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c0e2bb47 in SleepConditionVariableCS () from C:\Windows\system32\KernelBase.dll

#3  0x00007ff896f59420 in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#4  0x00007ff896f5935f in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#5  0x00007ff8c38ab097 in msvcrt!_beginthreadex () from C:\Windows\system32\msvcrt.dll

#6  0x00007ff8c38ab16c in msvcrt!_endthreadex () from C:\Windows\system32\msvcrt.dll

#7  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#8  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#9  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



---Type <return> to continue, or q <return> to quit---

Thread 12 (Thread 6352.0x1f14):

#0  0x00007ff8c4808404 in ntdll!ZwWaitForAlertByThreadId () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c47c7810 in ntdll!RtlSleepConditionVariableCS () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c0e2bb47 in SleepConditionVariableCS () from C:\Windows\system32\KernelBase.dll

#3  0x00007ff896f59420 in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#4  0x00007ff896f5935f in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#5  0x00007ff8c38ab097 in msvcrt!_beginthreadex () from C:\Windows\system32\msvcrt.dll

#6  0x00007ff8c38ab16c in msvcrt!_endthreadex () from C:\Windows\system32\msvcrt.dll

#7  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#8  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#9  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 11 (Thread 6352.0x1d00):

#0  0x00007ff8c4808404 in ntdll!ZwWaitForAlertByThreadId () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c47c7810 in ntdll!RtlSleepConditionVariableCS () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c0e2bb47 in SleepConditionVariableCS () from C:\Windows\system32\KernelBase.dll

#3  0x00007ff896f59420 in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#4  0x00007ff896f5935f in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#5  0x00007ff8c38ab097 in msvcrt!_beginthreadex () from C:\Windows\system32\msvcrt.dll

#6  0x00007ff8c38ab16c in msvcrt!_endthreadex () from C:\Windows\system32\msvcrt.dll

#7  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#8  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#9  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 10 (Thread 6352.0x544):

#0  0x00007ff8c4808404 in ntdll!ZwWaitForAlertByThreadId () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c47c7810 in ntdll!RtlSleepConditionVariableCS () from C:\Windows\SYSTEM32\ntdll.dll

---Type <return> to continue, or q <return> to quit---

#2  0x00007ff8c0e2bb47 in SleepConditionVariableCS () from C:\Windows\system32\KernelBase.dll

#3  0x00007ff896f59420 in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#4  0x00007ff896f5935f in avfilter_graph_parse_ptr () from E:\Dev\Library\ffmpeg\bin\avfilter-6.dll

#5  0x00007ff8c38ab097 in msvcrt!_beginthreadex () from C:\Windows\system32\msvcrt.dll

#6  0x00007ff8c38ab16c in msvcrt!_endthreadex () from C:\Windows\system32\msvcrt.dll

#7  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#8  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#9  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 9 (Thread 6352.0xdac):

#0  0x00007ff8c48058a4 in ntdll!ZwWaitForMultipleObjects () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c0e53b2f in WaitForMultipleObjectsEx () from C:\Windows\system32\KernelBase.dll

#2  0x00007ff8a2d4428b in ksproxy!DllUnregisterServer () from C:\Windows\System32\ksproxy.ax

#3  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#4  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#5  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 8 (Thread 6352.0x17b0):

#0  0x00007ff8c4804dd4 in ntdll!ZwWaitForSingleObject () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c0e2aadf in WaitForSingleObjectEx () from C:\Windows\system32\KernelBase.dll

#2  0x00007ff8a2d5a8bb in ksproxy!KsResolveRequiredAttributes () from C:\Windows\System32\ksproxy.ax

#3  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#4  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#5  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 7 (Thread 6352.0x1f70):

---Type <return> to continue, or q <return> to quit---

#0  0x00007ff8c4804dd4 in ntdll!ZwWaitForSingleObject () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c0e2aadf in WaitForSingleObjectEx () from C:\Windows\system32\KernelBase.dll

#2  0x00007ff896241b63 in ?? () from C:\Windows\System32\quartz.dll

#3  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#4  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#5  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 6 (Thread 6352.0x12fc):

#0  0x00007ff8c48058a4 in ntdll!ZwWaitForMultipleObjects () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c0e53b2f in WaitForMultipleObjectsEx () from C:\Windows\system32\KernelBase.dll

#2  0x00007ff8c0e53a2e in WaitForMultipleObjects () from C:\Windows\system32\KernelBase.dll

#3  0x00007ff8a2d5b312 in ksproxy!KsResolveRequiredAttributes () from C:\Windows\System32\ksproxy.ax

#4  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#5  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#6  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 5 (Thread 6352.0x1e6c):

#0  0x00007ff8c32a1f74 in USER32!InvalidateRect () from C:\Windows\system32\user32.dll

#1  0x00007ff8c3292e15 in USER32!GetMessageW () from C:\Windows\system32\user32.dll

#2  0x00007ff89628ac1d in QUARTZ!AMGetErrorTextW () from C:\Windows\System32\quartz.dll

#3  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#4  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#5  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 4 (Thread 6352.0x1a7c):

#0  0x00007ff8c4808464 in ntdll!ZwWaitForWorkViaWorkerFactory () from C:\Windows\SYSTEM32\ntdll.dll

---Type <return> to continue, or q <return> to quit---

#1  0x00007ff8c478b2e8 in ntdll!RtlAcquireSRWLockShared () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#3  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#4  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 3 (Thread 6352.0x13b0):

#0  0x00007ff8c4808464 in ntdll!ZwWaitForWorkViaWorkerFactory () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c478b2e8 in ntdll!RtlAcquireSRWLockShared () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#3  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#4  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 2 (Thread 6352.0x214c):

#0  0x00007ff8c4808464 in ntdll!ZwWaitForWorkViaWorkerFactory () from C:\Windows\SYSTEM32\ntdll.dll

#1  0x00007ff8c478b2e8 in ntdll!RtlAcquireSRWLockShared () from C:\Windows\SYSTEM32\ntdll.dll

#2  0x00007ff8c3e58102 in KERNEL32!BaseThreadInitThunk () from C:\Windows\system32\kernel32.dll

#3  0x00007ff8c47bc264 in ntdll!RtlUserThreadStart () from C:\Windows\SYSTEM32\ntdll.dll

#4  0x0000000000000000 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)



Thread 1 (Thread 6352.0xc70):

#0  0x00007ff894fd08af in avpriv_mpegts_parse_close () from E:\Dev\Library\ffmpeg\bin\avformat-57.dll

#1  0x00007ff894fd499b in avformat-57!av_get_output_timestamp () from E:\Dev\Library\ffmpeg\bin\avformat-57.dll

#2  0x00007ff89502dbae in ff_rtsp_parse_line () from E:\Dev\Library\ffmpeg\bin\avformat-57.dll

#3  0x00007ff894fd3ded in avformat-57!av_interleaved_write_frame () from E:\Dev\Library\ffmpeg\bin\avformat-57.dll

#4  0x000000014001ab18 in ?? ()

Backtrace stopped: previous frame inner to this frame (corrupt stack?)

</return></return></return></return></return></return></return></return></return></return></return></return>

Should H.264 bit rate be multiples of 8 ?

31 août 2016, par Dan Sharp

I’m working on a video platform receiving H.264 video and building an HLS stream (transmuxing the H.264 to Mpeg2 TS segments via calls to ffmpeg).

I wanted to set the bit rate to be about 2000 kbps, but I’m wondering : does it matter if it’s 2000 or 2048 ?

In other words, do things calculate better if the bit rate is multiples of 8, like 512 or 2024 or 2048 ?

I don’t know enough about how the bit rate is used, either on the sending side (camera) or on the processing side (ffmpeg).

From tests... I can’t see any noticeable difference between 2000 and 2048, but maybe one is slightly better than another for the transmuxing and segmenting ?

I welcome any thoughts/advice.

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Should H.264 bit rate be multiples of 8 ?

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