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• Flutter streaming with FFmpeg_flutter_kit not reaching server

  22 juillet 2024, par Julio Cesar Reis

  I'm trying to stream my flutter screen to youtube using FFmpeg flutter kit. Everything seems fine but the output never reaches youtube server.

  


  


  1. log in using Yt flutter package.

     


  


  2. create a broadcast

     


  


  3. create the livestream and bind it to the broadcast

     


  


  4. get the ingestion address through LiveStreamItem.cdn.ingestionInfo.ingestionAddress

     


  


  5. stream the frames saved through FFmpeg :

     


     final String rtmpUrl = "ls.cdn.ingestionInfo.ingestionAddress"

     


     final String command = '-re -i $framePath -c:v libx264 -f flv $rtmpUrl';

     


     await FFmpegKit.execute(command);

     


  


  


  But at the end I get errors like SESSION_NOT_FOUND, or the stream never reaches the server which keeps my broadcast as ready and not active so I can't go live.

  


  I've tried using the ingestionAddress plus the streamName separated by a slash, I've tried the direct stream using rtmp ://x.rtmp.youtube.com/live2/MY_API_KEY but none of that worked.

  


  ERROR LOG :

  


  


  I/flutter (19889) : ffmpeg version n6.0 I/flutter (19889) : Copyright
(c) 2000-2023 the FFmpeg developers I/flutter (19889) : I/flutter
(19889) : built with Android (7155654, based on r399163b1) clang
version 11.0.5
(https://android.googlesource.com/toolchain/llvm-project
87f1315dfbea7c137aa2e6d362dbb457e388158d) I/flutter (19889) :
  
configuration : —cross-prefix=aarch64-linux-android-
—sysroot=/Users/sue/Library/Android/sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/darwin-x86_64/sysroot
—prefix=/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/ffmpeg
—pkg-config=/opt/homebrew/bin/pkg-config —enable-version3 —arch=aarch64 —cpu=armv8-a —target-os=android —enable-neon —enable-asm —enable-inline-asm —ar=aarch64-linux-android-ar —cc=aarch64-linux-android24-clang —cxx=aarch64-linux-android24-clang++ —ranlib=aarch64-linux-android-ranlib —strip=aarch64-linux-android-strip —nm=aarch64-linux-android-nm —extra-libs='-L/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/cpu-features/lib
-lndk_compat' —disable-autodetect —enable-cross-compile —enable-pic —enable-jni —enable-optimizations —enable-swscale —disable-static —enable-shared —enable-pthreads —enable-v4l2-m2m —disable-outdev=fbdev —disable-indev=fbdev —enable-small —disable-xmm-clobber-test —disable-debug —enable-lto —disable-neon I/flutter (19889) : libavutil 58. 2.100 / 58. 2.100 I/flutter
(19889) : libavcodec 60. 3.100 / 60. 3.100 I/flutter (19889) :
  
libavformat 60. 3.100 / 60. 3.100 I/flutter (19889) :
  
libavdevice 60. 1.100 / 60. 1.100 I/flutter (19889) :
  
libavfilter 9. 3.100 / 9. 3.100 I/flutter (19889) : libswscale
7. 1.100 / 7. 1.100 I/flutter (19889) : libswresample 4. 10.100 / 4. 10.100 I/flutter (19889) : Input #0, png_pipe, from
'/data/user/0/com.example.poc_stream/cache/frame.png' : I/flutter
(19889) : Duration : I/flutter (19889) : N/A I/flutter (19889) : ,
bitrate : I/flutter (19889) : N/A I/flutter (19889) : I/flutter
(19889) : Stream #0:0 I/flutter (19889) : : Video : png, rgba(pc),
412x771 I/flutter (19889) : , I/flutter (19889) : 25 fps, I/flutter
(19889) : 25 tbr, I/flutter (19889) : 25 tbn I/flutter (19889) :
E/flutter (19889) : [ERROR:flutter/runtime/dart_vm_initializer.cc(41)]
Unhandled Exception : PlatformException(SESSION_NOT_FOUND, Session not
found., null, null) E/flutter (19889) : #0
  
StandardMethodCodec.decodeEnvelope
(package:flutter/src/services/message_codecs.dart:648:7) E/flutter
(19889) : #1 MethodChannel._invokeMethod
(package:flutter/src/services/platform_channel.dart:334:18) E/flutter
(19889) : E/flutter (19889) : #2
  
FFmpegKitFactory.mapToNullableSession
(package:ffmpeg_kit_flutter_min_gpl/src/ffmpeg_kit_factory.dart:76:3)
E/flutter (19889) : E/flutter (19889) : #3
  
FFmpegKitInitializer._processCompleteCallbackEvent.
(package:ffmpeg_kit_flutter_min_gpl/src/ffmpeg_kit_flutter_initializer.dart:213:48)
E/flutter (19889) : E/flutter (19889) :
I/flutter (19889) : Stream mapping : I/flutter (19889) : Stream #0:0 ->
#0:0 I/flutter (19889) : (png (native) -> h264 (libx264)) I/flutter (19889) : I/flutter (19889) : Press [q] to stop, [?] for help I/flutter
(19889) : [libx264 @ 0xb40000736398c190] using cpu capabilities : ARMv8
NEON I/flutter (19889) : [libx264 @ 0xb400007363a92e40] using cpu
capabilities : ARMv8 NEON I/flutter (19889) : [libx264 @
0xb40000736398c190] profile High 4:4:4 Predictive, level 3.0, 4:4:4,
8-bit I/flutter (19889) : [libx264 @ 0xb40000736398c190] 264 - core 164

  


  

  • H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - 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=6
lookahead_threads=1 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 I/flutter (19889) : Output #0, flv, to
'rtmp ://x.rtmp.youtube.com/live2/x7k6-grm1-z15w-tqb7-akrt' : I/flutter
(19889) : Metadata : I/flutter (19889) : encoder :
I/flutter (19889) : Lavf60.3.100 I/flutter (19889) : I/flutter (19889) :
Stream #0:0 I/flutter (19889) : : Video : h264 ([7][0][0][0] / 0x0007),
yuv444p(tv, unknown/bt709/iec61966-2-1, progressive), 412x771, q=2-31
I/flutter (19889) : , I/flutter (19889) : 25 fps, I/flutter (19889) :
1k tbn I/flutter (19889) : I/flutter (19889) : Metadata : I/flutter
(19889) : encoder : I/flutter (19889) : Lavc60.3.100
libx264 I/flutter (19889) : I/flutter (19889) : Side data :
I/flutter (19889) : I/flutter (19889) : cpb : I/flutter (19889) :
bitrate max/min/avg : 0/0/0 buffer size : 0 I/flutter (19889) :
vbv_delay : N/A I/flutter (19889) : I/flutter (19889) : Instance of
'Statistics' I/flutter (19889) : frame= 0 fps=0.0 q=0.0 size=
    
0kB time=N/A bitrate=N/A speed=N/A I/flutter (19889) : [libx264 @
0xb400007363a92e40] profile High 4:4:4 Predictive, level 3.0, 4:4:4,
8-bit I/flutter (19889) : [libx264 @ 0xb400007363a92e40] 264 - core 164

  


  • H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - 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=6
lookahead_threads=1 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 I/flutter (19889) : Output #0, flv, to
'rtmp ://x.rtmp.youtube.com/live2/x7k6-grm1-z15w-tqb7-akrt' : I/flutter
(19889) : Metadata : I/flutter (19889) : encoder :
I/flutter (19889) : Lavf60.3.100 I/flutter (19889) : I/flutter (19889) :
Stream #0:0 I/flutter (19889) : : Video : h264 ([7][0][0][0] / 0x0007),
yuv444p(tv, unknown/bt709/iec61966-2-1, progressive), 412x771, q=2-31
I/flutter (19889) : , I/flutter (19889) : 25 fps, I/flutter (19889) :
1k tbn I/flutter (19889) : I/flutter (19889) : Metadata : I/flutter
(19889) : encoder : I/flutter (19889) : Lavc60.3.100
libx264 I/flutter (19889) : I/flutter (19889) : Side data :
I/flutter (19889) : I/flutter (19889) : cpb : I/flutter (19889) :
bitrate max/min/avg : 0/0/0 buffer size : 0 I/flutter (19889) :
vbv_delay : N/A I/flutter (19889) : I/flutter (19889) : Instance of
'Statistics' I/flutter (19889) : frame= 0 fps=0.0 q=0.0 size=
    
0kB time=N/A bitrate=N/A speed=N/A I/flutter (19889) : [flv @
0xb4000074238c1c30] Failed to update header with correct duration.
I/flutter (19889) : [flv @ 0xb4000074238c1c30] Failed to update header
with correct filesize. I/flutter (19889) : Instance of 'Statistics'
I/flutter (19889) : frame= 1 fps=0.0 q=28.0 Lsize= 4kB
time=00:00:00.00 bitrate=N/A speed= 0x I/flutter (19889) :
video:4kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead : I/flutter (19889) : 8.895621% I/flutter (19889) :
I/flutter (19889) : [libx264 @ 0xb40000736398c190] frame I:1 Avg
QP:14.17 size : 2957 I/flutter (19889) : [libx264 @
0xb40000736398c190] mb I I16..4 : 1.4% 93.3% 5.3% I/flutter (19889) :
[libx264 @ 0xb40000736398c190] 8x8 transform intra:93.3% I/flutter
(19889) : [libx264 @ 0xb40000736398c190] coded y,u,v intra : 3.4% 1.4%
1.7% I/flutter (19889) : [libx264 @ 0xb40000736398c190] i16 v,h,dc,p : 78% 17% 6% 0% I/flutter (19889) : [libx264 @ 0xb40000736398c190] i8
v,h,dc,ddl,ddr,vr,hd,vl,hu : 36% 0% 64% 0% 0% 0% 0% 0% 0%
I/flutter (19889) : [libx264 @ 0xb40000736398c190] i4
v,h,dc,ddl,ddr,vr,hd,vl,hu : 49% 21% 14% 1% 3% 4% 3% 2% 3%
I/flutter (19889) : [libx264 @ 0xb40000736398c190] kb/s:591.40
I/flutter (19889) : ffmpeg version n6.0 I/flutter (19889) : Copyright
(c) 2000-2023 the FFmpeg developers I/flutter (19889) : I/flutter
(19889) : built with Android (7155654, based on r399163b1) clang
version 11.0.5
(https://android.googlesource.com/toolchain/llvm-project 87f1315dfbea7c137aa2e6d362dbb457e388158d) I/flutter (19889) :
    
configuration : —cross-prefix=aarch64-linux-android-
—sysroot=/Users/sue/Library/Android/sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/darwin-x86_64/sysroot
—prefix=/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/ffmpeg
—pkg-config=/opt/homebrew/bin/pkg-config —enable-version3 —arch=aarch64 —cpu=armv8-a —target-os=android —enable-neon —enable-asm —enable-inline-asm —ar=aarch64-linux-android-ar —cc=aarch64-linux-android24-clang —cxx=aarch64-linux-android24-clang++ —ranlib=aarch64-linux-android-ranlib —strip=aarch64-linux-android-strip —nm=aarch64-linux-android-nm —extra-libs='-L/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/cpu-features/lib
-lndk_compat' —disable-autodetect —enable-cross-compile —enable-pic —enable-jni —enable-optimizations —enable-swscale —disable-static —enable-shared —enable-pthreads —enable-v4l2-m2m —disable-outdev=fbdev —disable-indev=fbdev —enable-small —disable-xmm-clobber-test —disable-debug —enable-lto —disable-neon I/flutter (19889) : libavutil 58. 2.100 / 58. 2.100 I/flutter
(19889) : libavcodec 60. 3.100 / 60. 3.100 I/flutter (19889) :
    
libavformat 60. 3.100 / 60. 3.100 I/flutter (19889) :
    
libavdevice 60. 1.100 / 60. 1.100 I/flutter (19889) :
    
libavfilter 9. 3.100 / 9. 3.100 I/flutter (19889) : libswscale

  


  


  

  7. 1.100 / 7. 1.100 I/flutter (19889) : libswresample 4. 10.100 / 4. 10.100 I/flutter (19889) : [flv @ 0xb4000074238dac30] Failed to
update header with correct duration. I/flutter (19889) : [flv @
0xb4000074238dac30] Failed to update header with correct filesize.
I/flutter (19889) : Instance of 'Statistics' I/flutter (19889) : frame=
1 fps=0.0 q=28.0 Lsize= 4kB time=00:00:00.00 bitrate=N/A speed=
0x I/flutter (19889) : video:4kB audio:0kB subtitle:0kB other
streams:0kB global headers:0kB muxing overhead : I/flutter (19889) :
8.895621% I/flutter (19889) : I/flutter (19889) : Input #0, png_pipe, from '/data/user/0/com.example.poc_stream/cache/frame.png' : I/flutter
(19889) : Duration : I/flutter (19889) : N/A I/flutter (19889) : ,
bitrate : I/flutter (19889) : N/A I/flutter (19889) : I/flutter
(19889) : Stream #0:0 I/flutter (19889) : : Video : png, rgba(pc),
412x771 I/flutter (19889) : , I/flutter (19889) : 25 fps, I/flutter
(19889) : 25 tbr, I/flutter (19889) : 25 tbn I/flutter (19889) :
I/flutter (19889) : [libx264 @ 0xb400007363a92e40] frame I:1 Avg
QP:14.17 size : 2957 I/flutter (19889) : [libx264 @
0xb400007363a92e40] mb I I16..4 : 1.4% 93.3% 5.3% I/flutter (19889) :
[libx264 @ 0xb400007363a92e40] 8x8 transform intra:93.3% I/flutter
(19889) : [libx264 @ 0xb400007363a92e40] coded y,u,v intra : 3.4% 1.4%
1.7% I/flutter (19889) : [libx264 @ 0xb400007363a92e40] i16 v,h,dc,p : 78% 17% 6% 0% I/flutter (19889) : [libx264 @ 0xb400007363a92e40] i8
v,h,dc,ddl,ddr,vr,hd,vl,hu : 36% 0% 64% 0% 0% 0% 0% 0% 0%
I/flutter (19889) : [libx264 @ 0xb400007363a92e40] i4
v,h,dc,ddl,ddr,vr,hd,vl,hu : 49% 21% 14% 1% 3% 4% 3% 2% 3%
I/flutter (19889) : [libx264 @ 0xb400007363a92e40] kb/s:591.40
I/flutter (19889) : ffmpeg version n6.0 I/flutter (19889) : Copyright
(c) 2000-2023 the FFmpeg developers I/flutter (19889) : I/flutter
(19889) : built with Android (7155654, based on r399163b1) clang
version 11.0.5
(https://android.googlesource.com/toolchain/llvm-project
87f1315dfbea7c137aa2e6d362dbb457e388158d) I/flutter (19889) :
     
configuration : —cross-prefix=aarch64-linux-android-
—sysroot=/Users/sue/Library/Android/sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/darwin-x86_64/sysroot
—prefix=/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/ffmpeg
—pkg-config=/opt/homebrew/bin/pkg-config —enable-version3 —arch=aarch64 —cpu=armv8-a —target-os=android —enable-neon —enable-asm —enable-inline-asm —ar=aarch64-linux-android-ar —cc=aarch64-linux-android24-clang —cxx=aarch64-linux-android24-clang++ —ranlib=aarch64-linux-android-ranlib —strip=aarch64-linux-android-strip —nm=aarch64-linux-android-nm —extra-libs='-L/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/cpu-features/lib
-lndk_compat' —disable-autodetect —enable-cross-compile —enable-pic —enable-jni —enable-optimizations —enable-swscale —disable-static —enable-shared —enable-pthreads —enable-v4l2-m2m —disable-outdev=fbdev —disable-indev=fbdev —enable-small —disable-xmm-clobber-test —disable-debug —enable-lto —disable-neon I/flutter (19889) : libavutil 58. 2.100 / 58. 2.100 I/flutter
(19889) : libavcodec 60. 3.100 / 60. 3.100 I/flutter (19889) :
     
libavformat 60. 3.100 / 60. 3.100 I/flutter (19889) :
     
libavdevice 60. 1.100 / 60. 1.100 I/flutter (19889) :
     
libavfilter 9. 3.100 / 9. 3.100 I/flutter (19889) : libswscale

  


  8. 1.100 / 7. 1.100 I/flutter (19889) : libswresample 4. 10.100 / 4. 10.100 I/flutter (19889) : Input #0, png_pipe, from
'/data/user/0/com.example.poc_stream/cache/frame.png' : E/flutter
(19889) : [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled
Exception : PlatformException(SESSION_NOT_FOUND, Session not found.,
null, null) E/flutter (19889) : #0
     
StandardMethodCodec.decodeEnvelope
(package:flutter/src/services/message_codecs.dart:648:7) E/flutter
(19889) : #1 MethodChannel._invokeMethod
(package:flutter/src/services/platform_channel.dart:334:18) E/flutter
(19889) : E/flutter (19889) : #2
     
FFmpegKitFactory.mapToNullableSession
(package:ffmpeg_kit_flutter_min_gpl/src/ffmpeg_kit_factory.dart:76:3)
E/flutter (19889) : E/flutter (19889) : #3
     
FFmpegKitInitializer._processCompleteCallbackEvent.
(package:ffmpeg_kit_flutter_min_gpl/src/ffmpeg_kit_flutter_initializer.dart:213:48)
E/flutter (19889) : E/flutter (19889) :
I/flutter (19889) : Duration : I/flutter (19889) : N/A I/flutter
(19889) : , bitrate : I/flutter (19889) : N/A I/flutter (19889) :
I/flutter (19889) : Stream #0:0 I/flutter (19889) : : Video : png,
rgba(pc), 412x771 I/flutter (19889) : , I/flutter (19889) : 25 fps,
I/flutter (19889) : 25 tbr, I/flutter (19889) : 25 tbn I/flutter
(19889) : E/flutter (19889) :
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled
Exception : PlatformException(SESSION_NOT_FOUND, Session not found.,
null, null) E/flutter (19889) : #0
     
StandardMethodCodec.decodeEnvelope
(package:flutter/src/services/message_codecs.dart:648:7) E/flutter
(19889) : #1 MethodChannel._invokeMethod
(package:flutter/src/services/platform_channel.dart:334:18) E/flutter
(19889) : E/flutter (19889) : #2
     
FFmpegKitFactory.mapToNullableSession
(package:ffmpeg_kit_flutter_min_gpl/src/ffmpeg_kit_factory.dart:76:3)
E/flutter (19889) : E/flutter (19889) : #3
     
FFmpegKitInitializer._processCompleteCallbackEvent.
(package:ffmpeg_kit_flutter_min_gpl/src/ffmpeg_kit_flutter_initializer.dart:213:48)
E/flutter (19889) : E/flutter (19889) :
I/flutter (19889) : yzsFZWrI_Iw I/flutter (19889) : currentBc :
yzsFZWrI_Iw I/flutter (19889) : Stream mapping : I/flutter (19889) :
     
Stream #0:0 -> #0:0 I/flutter (19889) : (png (native) -> h264
(libx264)) I/flutter (19889) : I/flutter (19889) : Press [q] to stop,
[?] for help I/flutter (19889) : Stream mapping : I/flutter (19889) :
     
Stream #0:0 -> #0:0 I/flutter (19889) : (png (native) -> h264
(libx264)) I/flutter (19889) : I/flutter (19889) : Press [q] to stop,
[?] for help I/flutter (19889) : [libx264 @ 0xb4000073639665d0] using
cpu capabilities : ARMv8 NEON I/flutter (19889) : [libx264 @
0xb4000073639665d0] profile High 4:4:4 Predictive, level 3.0, 4:4:4,
8-bit I/flutter (19889) : [libx264 @ 0xb4000073639665d0] 264 - core 164

  


  


  

  • H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - 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=6
lookahead_threads=1 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 I/flutter (19889) : Output #0, flv, to
'rtmp ://x.rtmp.youtube.com/live2/x7k6-grm1-z15w-tqb7-akrt' : I/flutter
(19889) : Metadata : I/flutter (19889) : encoder :
I/flutter (19889) : Lavf60.3.100 I/flutter (19889) : I/flutter (19889) :
Stream #0:0 I/flutter (19889) : : Video : h264 ([7][0][0][0] / 0x0007),
yuv444p(tv, unknown/bt709/iec61966-2-1, progressive), 412x771, q=2-31
I/flutter (19889) : , I/flutter (19889) : 25 fps, I/flutter (19889) :
1k tbn I/flutter (19889) : I/flutter (19889) : Metadata : I/flutter
(19889) : encoder : I/flutter (19889) : Lavc60.3.100
libx264 I/flutter (19889) :

  


  


  


• Using FFMPEG with Xvfb, Can't get a smooth video output

  13 juillet 2020, par Emax

  I'm trying to stream to twitch from a linux server, I've installed Xvfb and FFMPEG, the live starts fine, but I can't get a smooth video output.

  


  Setps :

  


  Xvfb :1 -screen 0 1920x1080x24 &amp;&#xA;export DISPLAY=:1&#xA;&#xA;&#xA;ffmpeg -probesize 60M -video_size "1920x1080" -framerate 60 -f x11grab -i :1.0 -f flv -ac 2 -crf 23 \&#xA;       -vcodec libx264 -g 120 -b:v 3000k -minrate 3000k -maxrate 3000k -pix_fmt yuv420p\&#xA;       -s "1920x1080" -preset veryfast -tune zerolatency -acodec libmp3lame -threads 4 -strict normal \&#xA;       -bufsize 12000k "rtmp://live-mil.twitch.tv/app/<key>"&#xA;</key>

  


  I'm 100% sure that the app I'm trying to record output 60fps

  


  Also the FFMPEG output is

  


  ffmpeg version 4.1.6-1~deb10u1 Copyright (c) 2000-2020 the FFmpeg developers&#xA;  built with gcc 8 (Debian 8.3.0-6)&#xA;  configuration: --prefix=/usr --extra-version=&#x27;1~deb10u1&#x27; --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared&#xA;  libavutil      56. 22.100 / 56. 22.100&#xA;  libavcodec     58. 35.100 / 58. 35.100&#xA;  libavformat    58. 20.100 / 58. 20.100&#xA;  libavdevice    58.  5.100 / 58.  5.100&#xA;  libavfilter     7. 40.101 /  7. 40.101&#xA;  libavresample   4.  0.  0 /  4.  0.  0&#xA;  libswscale      5.  3.100 /  5.  3.100&#xA;  libswresample   3.  3.100 /  3.  3.100&#xA;  libpostproc    55.  3.100 / 55.  3.100&#xA;Input #0, x11grab, from &#x27;:1.0&#x27;:&#xA;  Duration: N/A, start: 1594669358.267783, bitrate: N/A&#xA;    Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080, 60 fps, 59.94 tbr, 1000k tbn, 1000k tbc&#xA;Stream mapping:&#xA;  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))&#xA;Press [q] to stop, [?] for help&#xA;[libx264 @ 0x55a2b7e28ec0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2&#xA;[libx264 @ 0x55a2b7e28ec0] profile High, level 4.2&#xA;[libx264 @ 0x55a2b7e28ec0] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=4 lookahead_threads=4 sliced_threads=1 slices=4 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=1 keyint=120 keyint_min=12 scenecut=40 intra_refresh=0 rc_lookahead=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=3000 vbv_bufsize=12000 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00&#xA;Output #0, flv, to &#x27;rtmp://live.twitch.tv/app/<key>&#x27;:&#xA;  Metadata:&#xA;    encoder         : Lavf58.20.100&#xA;    Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 1920x1080, q=-1--1, 3000 kb/s, 60 fps, 1k tbn, 60 tbc&#xA;    Metadata:&#xA;      encoder         : Lavc58.35.100 libx264&#xA;    Side data:&#xA;      cpb: bitrate max/min/avg: 3000000/0/3000000 buffer size: 12000000 vbv_delay: -1&#xA;frame=  436 fps= 61 q=22.0 size=     287kB time=00:00:08.73 bitrate= 269.1kbits/s dup=0 drop=0 speed=1.22x&#xA;</key>

  


  I've also tryed to output the recording to an mp4 video file but I got the same result : a laggy video, It's like ffmpeg is recording the input at a lower framerate than 60, how can I fix this ?

  


• Add black video to video with sound

  4 février 2017, par garrettlynch

  I’m trying to insert 13 seconds of black video at the start of a video that has sound using ffmpeg like so :

  ffmpeg -f lavfi -i "color=c=black:s=720x406:r=25:sar=1/1" -i input.mp4 -filter_complex \
  
  "[0:v] trim=end=13,setpts=PTS-STARTPTS [blackstart]; \
  
  [blackstart] [1:v] concat=n=2:v=1:a=0[out]" \
  
   -map "[out]" -c:a copy output.mp4

  However the sound is not being maintained. What am I doing incorrectly ? -c:a copy does not seem to work should I be using a [1:a] somewhere ?

  garrett-retina:~ garrett-macbookretina$ ffmpeg -f lavfi -i "color=c=red:s=720x406:r=25:sar=1/1" -i input.mp4 -filter_complex \
  
  > "[0:v] trim=end=13,setpts=PTS-STARTPTS [blackstart]; \
  
  > [blackstart] [1:v] concat=n=2:v=1:a=0[out]" \
  
  >  -map "[out]" -c:a copy output.mp4
  
  ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with Apple LLVM version 5.0 (clang-500.2.76) (based on LLVM 3.3svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
  
    libavutil      55. 34.100 / 55. 34.100
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.100 / 57. 56.100
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libavresample   3.  1.  0 /  3.  1.  0
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  Input #0, lavfi, from 'color=c=red:s=720x406:r=25:sar=1/1':
  
    Duration: N/A, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x406 [SAR 1:1 DAR 360:203], 25 tbr, 25 tbn, 25 tbc
  
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.56.100
  
    Duration: 33:59:47.32, start: 0.000000, bitrate: 179 kb/s
  
      Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 720x406 [SAR 1:1 DAR 360:203], 62 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 16000 Hz, stereo, fltp, 114 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  [libx264 @ 0x7fa344048400] using SAR=1/1
  
  [libx264 @ 0x7fa344048400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x7fa344048400] profile High, level 3.0
  
  [libx264 @ 0x7fa344048400] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=-2 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, mp4, to '/Users/garrett-macbookretina/Desktop/Best of Luck With the Wall/exports/test.mp4':
  
    Metadata:
  
      encoder         : Lavf57.56.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x406 [SAR 1:1 DAR 360:203], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        encoder         : Lavc57.64.101 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  Stream mapping:
  
    Stream #0:0 (rawvideo) -> trim
  
    Stream #1:0 (h264) -> concat:in1:v0
  
    concat -> Stream #0:0 (libx264)
  
  Press [q] to stop, [?] for help
  
  frame=3060008 fps=432 q=-1.0 Lsize=  957795kB time=34:00:00.20 bitrate=  64.1kbits/s speed=17.3x    
  
  video:921972kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.885564%
  
  [libx264 @ 0x7fa344048400] frame I:16585 Avg QP:13.67  size: 49743
  
  [libx264 @ 0x7fa344048400] frame P:770518 Avg QP:16.48  size:    91
  
  [libx264 @ 0x7fa344048400] frame B:2272905 Avg QP:25.11  size:    22
  
  [libx264 @ 0x7fa344048400] consecutive B-frames:  0.9%  0.1%  0.4% 98.6%
  
  [libx264 @ 0x7fa344048400] mb I  I16..4: 10.2% 39.7% 50.1%
  
  [libx264 @ 0x7fa344048400] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.7%  0.0%  0.0%  0.0%  0.0%    skip:99.1%
  
  [libx264 @ 0x7fa344048400] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:46.9% L1:53.1% BI: 0.1%
  
  [libx264 @ 0x7fa344048400] 8x8 transform intra:39.9% inter:52.0%
  
  [libx264 @ 0x7fa344048400] coded y,uvDC,uvAC intra: 86.1% 77.1% 60.4% inter: 0.0% 0.1% 0.0%
  
  [libx264 @ 0x7fa344048400] i16 v,h,dc,p: 66% 10% 13% 11%
  
  [libx264 @ 0x7fa344048400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 20% 14%  6%  7%  7%  7%  7% 11%
  
  [libx264 @ 0x7fa344048400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 19% 11%  7%  9%  8%  8%  7%  9%
  
  [libx264 @ 0x7fa344048400] i8c dc,h,v,p: 59% 19% 17%  5%
  
  [libx264 @ 0x7fa344048400] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fa344048400] ref P L0: 53.9%  4.0% 16.6% 25.5%  0.0%
  
  [libx264 @ 0x7fa344048400] ref B L0: 27.9% 71.6%  0.5%
  
  [libx264 @ 0x7fa344048400] ref B L1: 97.6%  2.4%
  
  [libx264 @ 0x7fa344048400] kb/s:61.71
  
  garrett-retina:~ garrett-macbookretina$