QuPengfei
commented
7 years ago Do you reproduce it without "scale_vaapi=w=1920:h=1080"?
Closed Brainiarc7 closed 7 years ago
QuPengfei
commented
7 years ago Do you reproduce it without "scale_vaapi=w=1920:h=1080"?
Brainiarc7
commented
7 years ago Hello @QuPengfei ,
Yes, I was able to reproduce the exact crash without using the vaapi scale filter, as shown below:
lin@phantom:~/Desktop/encodes/src$ gdb ~/ffmpeg_sources/FFmpeg/ffmpeg_g
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /home/lin/ffmpeg_sources/FFmpeg/ffmpeg_g...done.
(gdb) run -loglevel debug -threads 4 -vaapi_device /dev/dri/renderD129 -i "Demon.Hunter.One.Step.Behind.mkv" -c:a aac \
-filter:v 'format=nv12,hwupload' \
-c:v vp8_vaapi -loop_filter_level:v 32 -b:v 2500k \
-f matroska -y "Demon.Hunter.One.Step.Behind-VAAPIEXT.mkv"
Starting program: /home/lin/ffmpeg_sources/FFmpeg/ffmpeg_g -loglevel debug -threads 4 -vaapi_device /dev/dri/renderD129 -i "Demon.Hunter.One.Step.Behind.mkv" -c:a aac -filter:v 'format=nv12,hwupload' -c:v vp8_vaapi -loop_filter_level:v 32 -b:v 2500k -f matroska -y "Demon.Hunter.One.Step.Behind-VAAPIEXT.mkv"
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
ffmpeg version N-86329-ga47273c Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --pkg-config-flags=--static --prefix=/apps/ffmpeg/dyn --extra-cflags=-I/apps/ffmpeg/dyn/include --extra-ldflags=-L/apps/ffmpeg/dyn/lib --bindir=/apps/ffmpeg/dyn/bin --enable-debug=3 --enable-vaapi --enable-libvorbis --enable-libvpx --enable-gpl --cpu=native --enable-opengl --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-nonfree
libavutil 55. 63.100 / 55. 63.100
libavcodec 57. 96.101 / 57. 96.101
libavformat 57. 72.101 / 57. 72.101
libavdevice 57. 7.100 / 57. 7.100
libavfilter 6. 90.100 / 6. 90.100
libswscale 4. 7.101 / 4. 7.101
libswresample 2. 8.100 / 2. 8.100
libpostproc 54. 6.100 / 54. 6.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Reading option '-threads' ... matched as AVOption 'threads' with argument '4'.
Reading option '-vaapi_device' ... matched as option 'vaapi_device' (set VAAPI hardware device (DRM path or X11 display name)) with argument '/dev/dri/renderD129'.
Reading option '-i' ... matched as input url with argument 'Demon.Hunter.One.Step.Behind.mkv'.
Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'aac'.
Reading option '-filter:v' ... matched as option 'filter' (set stream filtergraph) with argument 'format=nv12,hwupload'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'vp8_vaapi'.
Reading option '-loop_filter_level:v' ... matched as AVOption 'loop_filter_level:v' with argument '32'.
Reading option '-b:v' ... matched as option 'b' (video bitrate (please use -b:v)) with argument '2500k'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'matroska'.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option 'Demon.Hunter.One.Step.Behind-VAAPIEXT.mkv' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Applying option vaapi_device (set VAAPI hardware device (DRM path or X11 display name)) with argument /dev/dri/renderD129.
[AVHWDeviceContext @ 0x29e34c0] Opened VA display via DRM device /dev/dri/renderD129.
libva info: VA-API version 0.39.2
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_39
libva info: va_openDriver() returns 0
[AVHWDeviceContext @ 0x29e34c0] Initialised VAAPI connection: version 0.39
[AVHWDeviceContext @ 0x29e34c0] Format 0x32315659 -> yuv420p.
[AVHWDeviceContext @ 0x29e34c0] Format 0x30323449 -> unknown.
[AVHWDeviceContext @ 0x29e34c0] Format 0x3231564e -> nv12.
[AVHWDeviceContext @ 0x29e34c0] Format 0x32595559 -> yuyv422.
[AVHWDeviceContext @ 0x29e34c0] Format 0x59565955 -> uyvy422.
[AVHWDeviceContext @ 0x29e34c0] Format 0x48323234 -> yuv422p.
[AVHWDeviceContext @ 0x29e34c0] Format 0x58424752 -> rgb0.
[AVHWDeviceContext @ 0x29e34c0] Format 0x58524742 -> bgr0.
[AVHWDeviceContext @ 0x29e34c0] Format 0x30313050 -> p010le.
[AVHWDeviceContext @ 0x29e34c0] Matched "Intel i965 driver for Intel(R) Skylake - 1.7.0" as known driver "Intel i965 (Quick Sync)".
Applying option y (overwrite output files) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input url Demon.Hunter.One.Step.Behind.mkv.
Successfully parsed a group of options.
Opening an input file: Demon.Hunter.One.Step.Behind.mkv.
[file @ 0x29ed4a0] Setting default whitelist 'file,crypto'
[matroska,webm @ 0x29ecdc0] Format matroska,webm probed with size=2048 and score=100
st:0 removing common factor 1000000 from timebase
st:1 removing common factor 1000000 from timebase
[matroska,webm @ 0x29ecdc0] Before avformat_find_stream_info() pos: 971 bytes read:32768 seeks:0 nb_streams:2
[hevc @ 0x29eff40] nal_unit_type: 32(VPS), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x29eff40] Decoding VPS
[hevc @ 0x29eff40] Main profile bitstream
[hevc @ 0x29eff40] nal_unit_type: 33(SPS), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x29eff40] Decoding SPS
[hevc @ 0x29eff40] Main profile bitstream
[hevc @ 0x29eff40] Decoding VUI
[hevc @ 0x29eff40] nal_unit_type: 34(PPS), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x29eff40] Decoding PPS
[matroska,webm @ 0x29ecdc0] All info found
[matroska,webm @ 0x29ecdc0] After avformat_find_stream_info() pos: 7136 bytes read:32768 seeks:0 frames:3
Input #0, matroska,webm, from 'Demon.Hunter.One.Step.Behind.mkv':
Metadata:
ENCODER : Lavf57.72.101
Duration: 00:05:09.70, start: -0.007000, bitrate: 5106 kb/s
Stream #0:0(eng), 2, 1/1000: Video: hevc (Main), 1 reference frame, yuv420p(tv, progressive), 1920x1080 (1920x1088) [SAR 1:1 DAR 16:9], 0/1, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default)
Metadata:
ENCODER : Lavc57.96.101 hevc_vaapi
DURATION : 00:05:09.685000000
Stream #0:1(eng), 1, 1/1000: Audio: opus, 48000 Hz, stereo, fltp, delay 312 (default)
Metadata:
DURATION : 00:05:09.701000000
Successfully opened the file.
Parsing a group of options: output url Demon.Hunter.One.Step.Behind-VAAPIEXT.mkv.
Applying option c:a (codec name) with argument aac.
Applying option filter:v (set stream filtergraph) with argument format=nv12,hwupload.
Applying option c:v (codec name) with argument vp8_vaapi.
Applying option b:v (video bitrate (please use -b:v)) with argument 2500k.
Applying option f (force format) with argument matroska.
Successfully parsed a group of options.
Opening an output file: Demon.Hunter.One.Step.Behind-VAAPIEXT.mkv.
[file @ 0x2a00d80] Setting default whitelist 'file,crypto'
Successfully opened the file.
[hevc @ 0x2a0a1a0] nal_unit_type: 32(VPS), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x2a0a1a0] Decoding VPS
[hevc @ 0x2a0a1a0] Main profile bitstream
[hevc @ 0x2a0a1a0] nal_unit_type: 33(SPS), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x2a0a1a0] Decoding SPS
[hevc @ 0x2a0a1a0] Main profile bitstream
[hevc @ 0x2a0a1a0] Decoding VUI
[hevc @ 0x2a0a1a0] nal_unit_type: 34(PPS), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x2a0a1a0] Decoding PPS
[New Thread 0x7fffeda24700 (LWP 25021)]
[New Thread 0x7fffed223700 (LWP 25022)]
[New Thread 0x7fffeca22700 (LWP 25023)]
[New Thread 0x7fffec221700 (LWP 25024)]
Stream mapping:
Stream #0:0 -> #0:0 (hevc (native) -> vp8 (vp8_vaapi))
Stream #0:1 -> #0:1 (opus (native) -> aac (native))
Press [q] to stop, [?] for help
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
Last message repeated 1 times
[hevc @ 0x2a0a1a0] nal_unit_type: 32(VPS), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x2a0a1a0] nal_unit_type: 33(SPS), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x2a0a1a0] nal_unit_type: 34(PPS), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x2a0a1a0] nal_unit_type: 19(IDR_W_RADL), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x2a0a1a0] Decoding VPS
[hevc @ 0x2a0a1a0] Main profile bitstream
[hevc @ 0x2a0a1a0] Decoding SPS
[hevc @ 0x2a0a1a0] Main profile bitstream
[hevc @ 0x2a0a1a0] Decoding VUI
[hevc @ 0x2a0a1a0] Decoding PPS
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
[hevc @ 0x2a1dac0] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
detected 8 logical cores
[New Thread 0x7fffeb362700 (LWP 25025)]
[New Thread 0x7fffea6e3700 (LWP 25026)]
[New Thread 0x7fffe9ee2700 (LWP 25027)]
[New Thread 0x7fffe96e1700 (LWP 25028)]
[New Thread 0x7fffe8ee0700 (LWP 25029)]
[New Thread 0x7fffe3fff700 (LWP 25030)]
[New Thread 0x7fffe37fe700 (LWP 25031)]
[hevc @ 0x2a1dac0] Output frame with POC 0.
[New Thread 0x7fffe2ffd700 (LWP 25032)]
[New Thread 0x7fffe27fc700 (LWP 25033)]
[graph_1_in_0_1 @ 0x2b33360] Setting 'time_base' to value '1/48000'
[graph_1_in_0_1 @ 0x2b33360] Setting 'sample_rate' to value '48000'
[graph_1_in_0_1 @ 0x2b33360] Setting 'sample_fmt' to value 'fltp'
[graph_1_in_0_1 @ 0x2b33360] Setting 'channel_layout' to value '0x3'
[graph_1_in_0_1 @ 0x2b33360] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
[format_out_0_1 @ 0x2b33580] Setting 'sample_fmts' to value 'fltp'
[format_out_0_1 @ 0x2b33580] Setting 'sample_rates' to value '96000|88200|64000|48000|44100|32000|24000|22050|16000|12000|11025|8000|7350'
[AVFilterGraph @ 0x2a0a700] query_formats: 4 queried, 9 merged, 0 already done, 0 delayed
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
Last message repeated 3 times
[hevc @ 0x2a39580] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
Last message repeated 1 times
[hevc @ 0x2a39580] Output frame with POC 1.
[hevc @ 0x2a4a040] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x2a4a040] Output frame with POC 2.
[hevc @ 0x2a0a1a0] Decoded frame with POC 0.
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
Last message repeated 2 times
[hevc @ 0x2a1dac0] Decoded frame with POC 3.
[hevc @ 0x2a0a1a0] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0x2a39580] Decoded frame with POC 1.
[New Thread 0x7fffe1925700 (LWP 25034)]
[New Thread 0x7fffe0f25700 (LWP 25035)]
[New Thread 0x7fffd7fff700 (LWP 25036)]
[New Thread 0x7fffd77fe700 (LWP 25037)]
[New Thread 0x7fffd6ffd700 (LWP 25038)]
[New Thread 0x7fffd67fc700 (LWP 25039)]
[New Thread 0x7fffd5ffb700 (LWP 25040)]
[New Thread 0x7fffd57fa700 (LWP 25041)]
[hevc @ 0x2a0a1a0] Output frame with POC 3.
[New Thread 0x7fffd4ff9700 (LWP 25042)]
[Parsed_format_0 @ 0x2a57440] compat: called with args=[nv12]
[Parsed_format_0 @ 0x2a57440] Setting 'pix_fmts' to value 'nv12'
[graph 0 input from stream 0:0 @ 0x2cabc60] Setting 'video_size' to value '1920x1080'
[graph 0 input from stream 0:0 @ 0x2cabc60] Setting 'pix_fmt' to value '0'
[graph 0 input from stream 0:0 @ 0x2cabc60] Setting 'time_base' to value '1/1000'
[graph 0 input from stream 0:0 @ 0x2cabc60] Setting 'pixel_aspect' to value '1/1'
[graph 0 input from stream 0:0 @ 0x2cabc60] Setting 'sws_param' to value 'flags=2'
[graph 0 input from stream 0:0 @ 0x2cabc60] Setting 'frame_rate' to value '24000/1001'
[graph 0 input from stream 0:0 @ 0x2cabc60] w:1920 h:1080 pixfmt:yuv420p tb:1/1000 fr:24000/1001 sar:1/1 sws_param:flags=2
[format @ 0x2a577a0] compat: called with args=[vaapi_vld]
[format @ 0x2a577a0] Setting 'pix_fmts' to value 'vaapi_vld'
[auto_scaler_0 @ 0x2befce0] Setting 'flags' to value 'bicubic'
[auto_scaler_0 @ 0x2befce0] w:iw h:ih flags:'bicubic' interl:0
[Parsed_format_0 @ 0x2a57440] auto-inserting filter 'auto_scaler_0' between the filter 'graph 0 input from stream 0:0' and the filter 'Parsed_format_0'
[AVFilterGraph @ 0x2befb20] query_formats: 5 queried, 3 merged, 1 already done, 0 delayed
[auto_scaler_0 @ 0x2befce0] w:1920 h:1080 fmt:yuv420p sar:1/1 -> w:1920 h:1080 fmt:nv12 sar:1/1 flags:0x4
[hwupload @ 0x2a57b80] Surface format is nv12.
[AVHWFramesContext @ 0x2befc00] Created surface 0x4000000.
[AVHWFramesContext @ 0x2befc00] Direct mapping possible.
[AVHWFramesContext @ 0x2befc00] Map surface 0x4000000.
[AVHWFramesContext @ 0x2befc00] Unmap surface 0x4000000.
[vp8_vaapi @ 0x2a0c840] VBR rate control is not supported with this driver version; using CBR instead.
[vp8_vaapi @ 0x2a0c840] Using nv12 as format of reconstructed frames.
[AVHWFramesContext @ 0x2cc0620] Created surface 0x4000001.
[AVHWFramesContext @ 0x2cc0620] Direct mapping possible.
[AVHWFramesContext @ 0x2cc0620] Created surface 0x4000002.
[AVHWFramesContext @ 0x2cc0620] Created surface 0x4000003.
Output #0, matroska, to 'Demon.Hunter.One.Step.Behind-VAAPIEXT.mkv':
Metadata:
encoder : Lavf57.72.101
Stream #0:0(eng), 0, 1/1000: Video: vp8 (vp8_vaapi), 1 reference frame (VP80 / 0x30385056), vaapi_vld, 1920x1080 [SAR 1:1 DAR 16:9], 0/1, q=2-31, 2500 kb/s, 23.98 fps, 1k tbn, 23.98 tbc (default)
Metadata:
DURATION : 00:05:09.685000000
encoder : Lavc57.96.101 vp8_vaapi
Stream #0:1(eng), 0, 1/1000: Audio: aac (LC) ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
Metadata:
DURATION : 00:05:09.701000000
encoder : Lavc57.96.101 aac
[vp8_vaapi @ 0x2a0c840] Encode frame: 1920x1080 (0).
[vp8_vaapi @ 0x2a0c840] Pictures: IDR (0/0)
[vp8_vaapi @ 0x2a0c840] Issuing encode for pic 0/0 as type IDR.
[vp8_vaapi @ 0x2a0c840] No reference pictures.
[vp8_vaapi @ 0x2a0c840] Input surface is 0x4000000.
[vp8_vaapi @ 0x2a0c840] Recon surface is 0x4000003.
[vp8_vaapi @ 0x2a0c840] Allocated output buffer 0x8000000
[vp8_vaapi @ 0x2a0c840] Output buffer is 0x8000000.
[vp8_vaapi @ 0x2a0c840] Param buffer (27) is 0x8000001.
[vp8_vaapi @ 0x2a0c840] Param buffer (27) is 0x8000002.
[vp8_vaapi @ 0x2a0c840] Param buffer (22) is 0x8000003.
[vp8_vaapi @ 0x2a0c840] Param buffer (23) is 0x8000004.
[vp8_vaapi @ 0x2a0c840] Param buffer (11) is 0x8000005.
[hevc @ 0x2a4a040] Decoded frame with POC 2.
[hevc @ 0x2a0a1a0] Decoded frame with POC 6.
Thread 1 "ffmpeg_g" received signal SIGSEGV, Segmentation fault.
0x00007fffedf009ad in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
(gdb) Regards,
Brainiarc7
QuPengfei
commented
7 years ago would you try the latest VAAPI version?
the following command worked well in my side. it is different from your clip. and the VP8 actually work.
BTW, the latest VAAPI and driver has a big improvement on VP8. you can try it.
ffmpeg -vaapi_device /dev/dri/renderD128 -hwaccel vaapi -hwaccel_output_format vaapi -i ~/workspace/stream/avc-improvement/otc_CBR_1920x1080_blue_sky_2M_ipb_01.h264 -an -vf 'format=nv12|vaapi,hwupload' :v 3000 -c:v vp8_vaapi output_vp8.ivf
Detail info: ffmpeg version N-85704-gcbfd44a Copyright (c) 2000-2017 the FFmpeg developers built with gcc 6.2.0 (Ubuntu 6.2.0-5ubuntu12) 20161005 configuration: libavutil 55. 61.100 / 55. 61.100 libavcodec 57. 93.100 / 57. 93.100 libavformat 57. 72.101 / 57. 72.101 libavdevice 57. 7.100 / 57. 7.100 libavfilter 6. 87.100 / 6. 87.100 libswscale 4. 7.101 / 4. 7.101 libswresample 2. 8.100 / 2. 8.100 libva info: VA-API version 0.40.0 libva info: va_getDriverName() returns 0 libva info: Trying to open /opt/X11R7/lib/dri/i965_drv_video.so libva info: Found init function __vaDriverInit_0_40 libva info: va_openDriver() returns 0 Input #0, h264, from '/home/bqu/workspace/stream/avc-improvement/otc_CBR_1920x1080_blue_sky_2M_ipb_01.h264': Duration: N/A, bitrate: N/A Stream #0:0: Video: h264 (Main), yuv420p(progressive), 1920x1080, 25 fps, 25 tbr, 1200k tbn, 50 tbc Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> vp8 (vp8_vaapi)) Press [q] to stop, [?] for help Output #0, ivf, to 'output_vp8.ivf': Metadata: encoder : Lavf57.72.101 Stream #0:0: Video: vp8 (vp8_vaapi) (VP80 / 0x30385056), vaapi_vld, 1920x1080, q=2-31, 3 kb/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc57.93.100 vp8_vaapi frame= 217 fps=132 q=-0.0 Lsize= 1003kB time=00:00:08.68 bitrate= 946.5kbits/s speed=5.28x video:1000kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.257334%
Brainiarc7
commented
7 years ago Alright, let me try again with vaapi 0.40.0.
Brainiarc7
commented
7 years ago I'll be testing against this PPA as it has the latest VAAPI builds for Ubuntu 16.04LTS at the moment.
QuPengfei
commented
7 years ago Also VAAPI driver version is 1.8.0+
here is vainfo libva info: VA-API version 0.40.0 libva info: va_getDriverName() returns 0 libva info: Trying to open /opt/X11R7/lib/dri/i965_drv_video.so libva info: Found init function __vaDriverInit_0_40 libva info: va_openDriver() returns 0 vainfo: VA-API version: 0.40 (libva ) vainfo: Driver version: Intel i965 driver for Intel(R) Skylake - 1.8.3.pre1 (glk-alpha-51-g5f479ac) vainfo: Supported profile and entrypoints
Brainiarc7
commented
7 years ago Hello @QuPengfei,
It worked!
Upgrading to the latest libva and intel-vaapi-driver package fixed the problem.
I can now comfortably close this issue, and thanks for your time :-)
Attempting to encode VP8 via the vp8_vaapi encoder on FFmpeg (and liabv) fails on Intel Skylake with a sigserv/segfault:
First, I built and configured FFmpeg with debugging enabled so as to run a gdb trace and find out what triggers the sigserv:
FFmpeg build configuration:
This generates a local FFmpeg build for use with VAAPI only.
Includes extra components as needed:
Build and deploy Yasm: Yasm is an assembler for x86 optimizations used by x264 and FFmpeg. Highly recommended or your resulting build may be very slow.
Build and deploy libx264 statically: This library provides a H.264 video encoder. See the H.264 Encoding Guide for more information and usage examples. This requires ffmpeg to be configured with --enable-gpl --enable-libx264.
Build and configure libx265: This library provides a H.265/HEVC video encoder. See the H.265 Encoding Guide for more information and usage examples.
Build and deploy the libfdk-aac library: This provides an AAC audio encoder. See the AAC Audio Encoding Guide for more information and usage examples. This requires ffmpeg to be configured with --enable-libfdk-aac (and --enable-nonfree if you also included --enable-gpl).
Build and configure libvpx:
Build LibVorbis:
Build FFmpeg:
Note: I skipped the
distcleansection so as to retain theffmpeg_gbinary.Now, to debug the segfault encountered with the
vp8_vaapiencoder on FFmpeg, I ranffmpeg_gunder a local gdb session, passing the necessary arguments as shown below:FFmpeg debug output with gdb:
So it seems that the crash originates from
/usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so, which is registered as the VAAPI driver under vainfo, as shown below:For your reference:
Platform information:
Vainfo's output:
lspci's output:
OS information:
So far, it seems that this crash originates from the i915 driver's interactions with VAAPI, and I was also able to reproduce the exact crash with libav. Please help.