[Fixed] [svn5671]QSV: video fails with Lookahead

gmb · Post by **gmb** » Fri Aug 23, 2013 6:57 pm

I have a video that fails when trying to encode with QS Lookahead. The full video is over 2 hours long, it just freezes and I have to restart my PC. The small sample over a minute freezes at 0,59%. Here is the small sample: http://www.file-upload.net/download-800 ... e.zip.html

gmb · Post by **gmb** » Fri Aug 23, 2013 11:08 pm

Uninstalled the driver and reinstalled, now it works. I did some tests with older drivers by changing the libmfxhw32.dll and libmfxhw64.dll, I'm shocked that 15.31.64.2885 runs so much faster in a smaller resolution.

Advanced query field:

mbbrc=0:extbrc=0:gop-ref-dist=0:gop-pic-size=0:target-usage=7

1202x544, QP30

15.31.64.2885= 870 fps
15.31.1.64.3006= 499 fps
15.31.3.64.3071= 499 fps
15.31.9.64.3165= 499 fps
15.33.64.3214= 499 fps
15.33.0.3262= 499 fps
15.31.18.64.3272= 499 fps

Driver build 2885 is so much faster. How is that possible? There must be some sort of fps cap at 500 fps in newer drivers or maybe it's a Handbrake specific thing. I want 2885 speed back, is this a driver thing or Handbrake specific?

Post by **s55** » Fri Aug 23, 2013 11:53 pm

Not sue yet. I saw that 499fps issue to. It appears to be artificial as you say. It's something to do with the decode but that's all I know at the moment

gmb · Post by **gmb** » Sat Aug 24, 2013 12:06 am

Is there a way to check if QS hardware decoding is running? Maybe with the 2885 driver the QS hardware decoder fails and the CPU does the decoding job. The CPU consumption is still very low around 20% despite the much higher fps. On a very low resolution I can reach 1600 fps (CPU consumption 40%).

Deleted User 11865 · Post by **Deleted User 11865** » Sat Aug 24, 2013 12:46 am

gmb wrote:Is there a way to check if QS hardware decoding is running? Maybe with the 2885 driver the QS hardware decoder fails and the CPU does the decoding job.

Nope, the way it's setup in HB, this cannot happen. If QSV decoding fails, the whole job fails.

gmb · Post by **gmb** » Sat Aug 24, 2013 1:07 am

The question remains why driver build 2885 driver is so much faster. In this video it is obvious that new drivers are limited to 500 fps which must be a deliberate driver cap from Intel. Why they are doing this? I guess I have to ask them. Maybe they thought 500 fps is more than enough lol.

gmb · Post by **gmb** » Sat Aug 24, 2013 9:06 am

A 50 minutes video converted in under 1 minute:

gmb · Post by **gmb** » Sat Aug 24, 2013 10:12 am

QSTranscode is finished in 60 seconds, a bit slower but still crazy fast. The CPU utilization with QSTranscode is way lower however. Handbrake utilizes the CPU with around 40% and QSTranscode with just 10%. Same video, settings, driver of course.

Deleted User 11865 · Post by **Deleted User 11865** » Sat Aug 24, 2013 2:42 pm

gmb wrote:Handbrake utilizes the CPU with around 40% and QSTranscode with just 10%. Same video, settings, driver of course.

How about audio settings? That uses the CPU too

gmb · Post by **gmb** » Sat Aug 24, 2013 3:28 pm

Without audio:

CPU utilization ~15% and +280 fps. The audio causes the CPU load indeed.

gmb · Post by **gmb** » Sun Aug 25, 2013 3:16 pm

The new nightly with QS is much slower, is this correct? Here same with the new nightly audio disabled:

The new version lost more than 400 fps.

Deleted User 11865 · Post by **Deleted User 11865** » Sun Aug 25, 2013 4:18 pm

Logs for both so we can compare?

Post by **s55** » Sun Aug 25, 2013 4:21 pm

Might be related to an issue in the GUI that wasn't setting the quality flag, so it may be target bitrate.

gmb · Post by **gmb** » Sun Aug 25, 2013 4:25 pm

Here the logs for svn5671.

Code: Select all

HandBrake svn5671 (Nightly Build) - 64bit Version
OS: Microsoft Windows NT 6.1.7601 Service Pack 1
CPU: Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz
Ram: 8082 MB, Screen: 1280x1024
Temp Dir: C:\Users\Ralf\AppData\Local\Temp\
Install Dir: C:\Handbrake_5671
Data Dir: C:\Users\Ralf\AppData\Roaming\HandBrake\HandBrake\0.0.0.5671

-------------------------------------------
 -i "C:\Quicksync\TDF2013.mp4" -t0  --min-duration=10 -v 
[18:19:46] Intel Quick Sync Video support: yes
[18:19:46]  - 4th gen. Intel Core processor
[18:19:46]  - hardware name:    Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz
[18:19:46]  - hardware version: 1.7 (minimum: 1.3)
[18:19:46]  - software version: 1.7 (minimum: 1.3)
[18:19:46] hb_init: starting libhb thread
HandBrake svn5671 (2013072701) - MinGW x86_64 - http://handbrake.fr
4 CPUs detected
Opening C:\Quicksync\TDF2013.mp4...
[18:19:46] hb_scan: path=C:\Quicksync\TDF2013.mp4, title_index=0
libbluray/bdnav/index_parse.c:162: indx_parse(): error opening C:\Quicksync\TDF2013.mp4/BDMV/index.bdmv
libbluray/bdnav/index_parse.c:162: indx_parse(): error opening C:\Quicksync\TDF2013.mp4/BDMV/BACKUP/index.bdmv
libbluray/bluray.c:1725: nav_get_title_list(C:\Quicksync\TDF2013.mp4) failed (00000000003256c0)
[18:19:46] bd: not a bd - trying as a stream/file instead
libdvdnav: Using dvdnav version 4.1.3
libdvdread: Encrypted DVD support unavailable.
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.IFO failed
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.BUP failed
libdvdread: Can't open file VIDEO_TS.IFO.
libdvdnav: vm: failed to read VIDEO_TS.IFO
[18:19:46] dvd: not a dvd - trying as a stream/file instead
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Quicksync\TDF2013.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    creation_time   : 2013-07-10 13:05:03
    encoder         : HandBrake 0.9.8 2012071800
  Duration: 00:49:58.56, start: 0.000000, bitrate: 971 kb/s
    Stream #0.0(und): Video: h264 (Main), yuv420p, 640x352, 805 kb/s, 25 fps, 90k tbn, 180k tbc
    Metadata:
      creation_time   : 2013-07-10 13:05:03
    Stream #0.1(und): Audio: aac, 48000 Hz, stereo, fltp, 161 kb/s
    Metadata:
      creation_time   : 2013-07-10 13:05:03
[18:19:47] scan: decoding previews for title 1
[18:19:47] scan: audio 0x1: aac, rate=48000Hz, bitrate=161817 Unknown (aac) (2.0 ch)
[18:19:47] scan: 10 previews, 640x352, 25.000 fps, autocrop = 0/0/0/0, aspect 16:9, PAR 1:1
[18:19:47] libhb: scan thread found 1 valid title(s)
+ title 1:
  + stream: C:\Quicksync\TDF2013.mp4
  + duration: 00:49:58
  + size: 640x352, pixel aspect: 1/1, display aspect: 1.82, 25.000 fps
  + autocrop: 0/0/0/0
  + chapters:
    + 1: cells 0->0, 0 blocks, duration 00:49:58
  + audio tracks:
    + 1, Unknown (aac) (2.0 ch) (iso639-2: und)
  + subtitle tracks:
HandBrake has exited.

Code: Select all

HandBrake svn5671 (Nightly Build) - 64bit Version
OS: Microsoft Windows NT 6.1.7601 Service Pack 1
CPU: Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz
Ram: 8082 MB, Screen: 1280x1024
Temp Dir: C:\Users\Ralf\AppData\Local\Temp\
Install Dir: C:\Handbrake_5671
Data Dir: C:\Users\Ralf\AppData\Roaming\HandBrake\HandBrake\0.0.0.5671

-------------------------------------------
CLI Query:  -i "C:\Quicksync\TDF2013.mp4" -t 1 --angle 1 -c 1 -o "C:\Quicksync\Handbrake Output HSW\Tdf2013-1.m4v"  -f mp4  -w 640 --loose-anamorphic  --modulus 2 -e qsv_h264 -q 30 --cfr -a none  --audio-fallback ac3 --markers="C:\Users\Ralf\AppData\Local\Temp\Tdf2013-1-1-chapters.csv" -x target-usage=4:mbbrc=0:gop-ref-dist=0:gop-pic-size=0:target-usage=7 --verbose=1
User Query: False

[18:21:34] Intel Quick Sync Video support: yes
[18:21:34]  - 4th gen. Intel Core processor
[18:21:34]  - hardware name:    Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz
[18:21:34]  - hardware version: 1.7 (minimum: 1.3)
[18:21:34]  - software version: 1.7 (minimum: 1.3)
[18:21:34] hb_init: starting libhb thread
HandBrake svn5671 (2013072701) - MinGW x86_64 - http://handbrake.fr
4 CPUs detected
Opening C:\Quicksync\TDF2013.mp4...
[18:21:34] hb_scan: path=C:\Quicksync\TDF2013.mp4, title_index=1
libbluray/bdnav/index_parse.c:162: indx_parse(): error opening C:\Quicksync\TDF2013.mp4/BDMV/index.bdmv
libbluray/bdnav/index_parse.c:162: indx_parse(): error opening C:\Quicksync\TDF2013.mp4/BDMV/BACKUP/index.bdmv
libbluray/bluray.c:1725: nav_get_title_list(C:\Quicksync\TDF2013.mp4) failed (00000000003261b0)
[18:21:34] bd: not a bd - trying as a stream/file instead
libdvdnav: Using dvdnav version 4.1.3
libdvdread: Encrypted DVD support unavailable.
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.IFO failed
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.BUP failed
libdvdread: Can't open file VIDEO_TS.IFO.
libdvdnav: vm: failed to read VIDEO_TS.IFO
[18:21:34] dvd: not a dvd - trying as a stream/file instead
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Quicksync\TDF2013.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    creation_time   : 2013-07-10 13:05:03
    encoder         : HandBrake 0.9.8 2012071800
  Duration: 00:49:58.56, start: 0.000000, bitrate: 971 kb/s
    Stream #0.0(und): Video: h264 (Main), yuv420p, 640x352, 805 kb/s, 25 fps, 90k tbn, 180k tbc
    Metadata:
      creation_time   : 2013-07-10 13:05:03
    Stream #0.1(und): Audio: aac, 48000 Hz, stereo, fltp, 161 kb/s
    Metadata:
      creation_time   : 2013-07-10 13:05:03
[18:21:35] scan: decoding previews for title 1
[18:21:35] scan: audio 0x1: aac, rate=48000Hz, bitrate=161817 Unknown (aac) (2.0 ch)
[18:21:35] scan: 10 previews, 640x352, 25.000 fps, autocrop = 0/0/0/0, aspect 16:9, PAR 1:1
[18:21:35] libhb: scan thread found 1 valid title(s)
+ title 1:
  + stream: C:\Quicksync\TDF2013.mp4
  + duration: 00:49:58
  + size: 640x352, pixel aspect: 1/1, display aspect: 1.82, 25.000 fps
  + autocrop: 0/0/0/0
  + chapters:
    + 1: cells 0->0, 0 blocks, duration 00:49:58
  + audio tracks:
    + 1, Unknown (aac) (2.0 ch) (iso639-2: und)
  + subtitle tracks:
Reading chapter markers from file C:\Users\Ralf\AppData\Local\Temp\Tdf2013-1-1-chapters.csv
[18:21:35] 1 job(s) to process
[18:21:35] starting job
[18:21:35] sync: expecting 74964 video frames
[18:21:35] work: only 1 chapter, disabling chapter markers
[18:21:35] job configuration:
[18:21:35]  * source
[18:21:35]    + C:\Quicksync\TDF2013.mp4
[18:21:35]    + title 1, chapter(s) 1 to 1
[18:21:35]    + container: mov,mp4,m4a,3gp,3g2,mj2
[18:21:35]    + data rate: 971 kbps
[18:21:35]  * destination
[18:21:35]    + C:\Quicksync\Handbrake Output HSW\Tdf2013-1.m4v
[18:21:35]    + container: MPEG-4 (mp4v2)
[18:21:35]  * video track
[18:21:35]    + decoder: h264
[18:21:35]      + bitrate 805 kbps
[18:21:35]    + loose anamorphic
[18:21:35]      + storage dimensions: 640 * 352, mod 2
[18:21:35]      + pixel aspect ratio: 1 / 1
[18:21:35]      + display dimensions: 640 * 352
[18:21:35]    + encoder: H.264 (Intel QSV)
[18:21:35]      + options: target-usage=4:mbbrc=0:gop-ref-dist=0:gop-pic-size=0:target-usage=7
[18:21:35]      + quality: 30.00 (QP)
[18:21:35] reader: first SCR 0 id 0x0 DTS -10800
[18:21:35] sync: first pts is 10800
[18:21:35] qsv: Intel QSV/MediaSDK uses hardware implementation
[18:21:35] qsv: RateControlMethod:MFX_RATECONTROL_CQP(I:30/P:32/B:34)
[18:21:35] qsv: TargetUsage:7 AsyncDepth:4
[18:21:35] qsv: GopRefDist:0 GopPicSize:0 NumRefFrame:0
[18:22:15] reader: done. 1 scr changes
[18:22:15] work: average encoding speed for job is 1865.814331 fps
[18:22:16] mux: track 0, 74962 frames, 155954622 bytes, 416.08 kbps, fifo 16384
[18:22:16] sync: got 74962 frames, 74964 expected
[18:22:16] h264_qsv-decoder done: 74962 frames, 0 decoder errors, 0 drops
[18:22:16] enc_qsv done: frames: 74962 in, 74962 out
[18:22:16] libhb: work result = 0
Encode done!
HandBrake has exited.

gmb · Post by **gmb** » Sun Aug 25, 2013 4:28 pm

And here for svn5747.

Code: Select all

HandBrake svn5747 (Nightly Build) - 64bit Version
OS: Microsoft Windows NT 6.1.7601 Service Pack 1
CPU: Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz
Ram: 8082 MB, Screen: 1280x1024
Temp Dir: C:\Users\Ralf\AppData\Local\Temp\
Install Dir: C:\Program Files\Handbrake5747
Data Dir: C:\Users\Ralf\AppData\Roaming\HandBrake\HandBrake\0.0.0.5747

-------------------------------------------
[18:19:41] hb_scan: CPU count: 4
[18:19:41] hb_scan: CPU name:  Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz
[18:19:41] hb_scan: CPU type:  Intel microarchitecture Haswell
[18:19:41] hb_scan: path=C:\Quicksync\TDF2013.mp4, title_index=0
libbluray/bdnav/index_parse.c:162: indx_parse(): error opening C:\Quicksync\TDF2013.mp4/BDMV/index.bdmv
libbluray/bdnav/index_parse.c:162: indx_parse(): error opening C:\Quicksync\TDF2013.mp4/BDMV/BACKUP/index.bdmv
libbluray/bluray.c:1725: nav_get_title_list(C:\Quicksync\TDF2013.mp4) failed (000000002bb197e0)
[18:19:41] bd: not a bd - trying as a stream/file instead
libdvdread: Encrypted DVD support unavailable.
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.IFO failed
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.BUP failed
libdvdread: Can't open file VIDEO_TS.IFO.
dvd: ifoOpen failed
dvd: ifoOpen failed
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Quicksync\TDF2013.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    creation_time   : 2013-07-10 13:05:03
    encoder         : HandBrake 0.9.8 2012071800
  Duration: 00:49:58.56, start: 0.000000, bitrate: 971 kb/s
    Stream #0.0(und): Video: h264 (Main), yuv420p, 640x352, 805 kb/s, 25 fps, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2013-07-10 13:05:03
    Stream #0.1(und): Audio: aac, 48000 Hz, stereo, fltp, 161 kb/s (default)
    Metadata:
      creation_time   : 2013-07-10 13:05:03
[18:19:41] scan: decoding previews for title 1
[18:19:41] scan: audio 0x1: aac, rate=48000Hz, bitrate=161817 Unknown (aac) (2.0 ch)
[18:19:41] scan: 10 previews, 640x352, 25.000 fps, autocrop = 0/0/0/0, aspect 16:9, PAR 1:1
[18:19:42] libhb: scan thread found 1 valid title(s)

Code: Select all

HandBrake svn5747 (Nightly Build) - 64bit Version
OS: Microsoft Windows NT 6.1.7601 Service Pack 1
CPU: Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz
Ram: 8082 MB, Screen: 1280x1024
Temp Dir: C:\Users\Ralf\AppData\Local\Temp\
Install Dir: C:\Program Files\Handbrake5747
Data Dir: C:\Users\Ralf\AppData\Roaming\HandBrake\HandBrake\0.0.0.5747

-------------------------------------------
CLI Query:  -i "C:\Quicksync\TDF2013.mp4" -t 1 --angle 1 -c 1 -o "C:\Quicksync\Handbrake Output HSW\Tdf2013-svn5747.m4v"  -f mp4  -w 640 --loose-anamorphic  --modulus 2 -e qsv_h264 --cfr -a none  --audio-fallback ac3 --markers="C:\Users\Ralf\AppData\Local\Temp\Tdf2013-svn5747-1-chapters.csv" -x target-usage=4:mbbrc=0:gop-ref-dist=0:gop-pic-size=0:target-usage=7 --verbose=1
User Query: False

[18:23:08] Intel Quick Sync Video support: yes
[18:23:08]  - Intel Media SDK hardware: API 1.7 (minimum: 1.3)
[18:23:08]  - Intel Media SDK software: API 1.7 (minimum: 1.3)
[18:23:08] hb_init: starting libhb thread
HandBrake svn5747 (2013082401) - MinGW x86_64 - http://handbrake.fr
4 CPUs detected
Opening C:\Quicksync\TDF2013.mp4...
[18:23:08] hb_scan: CPU count: 4
[18:23:08] hb_scan: CPU name:  Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz
[18:23:08] hb_scan: CPU type:  Intel microarchitecture Haswell
[18:23:08] hb_scan: path=C:\Quicksync\TDF2013.mp4, title_index=1
libbluray/bdnav/index_parse.c:162: indx_parse(): error opening C:\Quicksync\TDF2013.mp4/BDMV/index.bdmv
libbluray/bdnav/index_parse.c:162: indx_parse(): error opening C:\Quicksync\TDF2013.mp4/BDMV/BACKUP/index.bdmv
libbluray/bluray.c:1725: nav_get_title_list(C:\Quicksync\TDF2013.mp4) failed (0000000001df6180)
[18:23:08] bd: not a bd - trying as a stream/file instead
libdvdnav: Using dvdnav version 4.1.3
libdvdread: Encrypted DVD support unavailable.
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.IFO failed
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.BUP failed
libdvdread: Can't open file VIDEO_TS.IFO.
libdvdnav: vm: failed to read VIDEO_TS.IFO
[18:23:08] dvd: not a dvd - trying as a stream/file instead
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Quicksync\TDF2013.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    creation_time   : 2013-07-10 13:05:03
    encoder         : HandBrake 0.9.8 2012071800
  Duration: 00:49:58.56, start: 0.000000, bitrate: 971 kb/s
    Stream #0.0(und): Video: h264 (Main), yuv420p, 640x352, 805 kb/s, 25 fps, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2013-07-10 13:05:03
    Stream #0.1(und): Audio: aac, 48000 Hz, stereo, fltp, 161 kb/s (default)
    Metadata:
      creation_time   : 2013-07-10 13:05:03
[18:23:09] scan: decoding previews for title 1
[18:23:09] scan: audio 0x1: aac, rate=48000Hz, bitrate=161817 Unknown (aac) (2.0 ch)
[18:23:09] scan: 10 previews, 640x352, 25.000 fps, autocrop = 0/0/0/0, aspect 16:9, PAR 1:1
Scanning title 1 of 1, preview 10, 100.00 %[18:23:09] libhb: scan thread found 1 valid title(s)
+ title 1:
  + stream: C:\Quicksync\TDF2013.mp4
  + duration: 00:49:58
  + size: 640x352, pixel aspect: 1/1, display aspect: 1.82, 25.000 fps
  + autocrop: 0/0/0/0
  + chapters:
    + 1: cells 0->0, 0 blocks, duration 00:49:58
  + audio tracks:
    + 1, Unknown (aac) (2.0 ch) (iso639-2: und)
  + subtitle tracks:
Reading chapter markers from file C:\Users\Ralf\AppData\Local\Temp\Tdf2013-svn5747-1-chapters.csv
[18:23:10] 1 job(s) to process
[18:23:10] starting job
[18:23:10] do_job: full QSV path, removing unsupported filter 'Framerate Shaper'
[18:23:10] sync: expecting 74964 video frames
[18:23:10] work: only 1 chapter, disabling chapter markers
[18:23:10] job configuration:
[18:23:10]  * source
[18:23:10]    + C:\Quicksync\TDF2013.mp4
[18:23:10]    + title 1, chapter(s) 1 to 1
[18:23:10]    + container: mov,mp4,m4a,3gp,3g2,mj2
[18:23:10]    + data rate: 971 kbps
[18:23:10]  * destination
[18:23:10]    + C:\Quicksync\Handbrake Output HSW\Tdf2013-svn5747.m4v
[18:23:10]    + container: MPEG-4 (mp4v2)
[18:23:10]  * video track
[18:23:10]    + decoder: h264_qsv
[18:23:10]      + bitrate 805 kbps
[18:23:10]    + loose anamorphic
[18:23:10]      + storage dimensions: 640 * 352, mod 2
[18:23:10]      + pixel aspect ratio: 1 / 1
[18:23:10]      + display dimensions: 640 * 352
[18:23:10]    + encoder: H.264 (Intel QSV)
[18:23:10]      + options: target-usage=4:mbbrc=0:gop-ref-dist=0:gop-pic-size=0:target-usage=7
[18:23:10]      + bitrate: 1000 kbps, pass: 0
[18:23:10] reader: first SCR 0 id 0x0 DTS -10800
[18:23:10] encqsvInit: using hardware implementation (1.7)
[18:23:10] encqsvInit: TargetUsage 7 AsyncDepth 4
[18:23:10] encqsvInit: GopRefDist 3 GopPicSize 256 NumRefFrame 2
[18:23:10] encqsvInit: RateControlMethod AVBR TargetKbps 1000
[18:23:10] encqsvInit: PicStruct progressive
[18:23:10] encqsvInit: CAVLC off RateDistortionOpt off
[18:23:10] encqsvInit: MBBRC off ExtBRC off
[18:23:10] encqsvInit: Trellis unknown (auto)
[18:23:10] encqsvInit: H.264 profile High @ level 3.0
[18:23:10] sync: first pts is 10800
[18:24:01] reader: done. 1 scr changes
[18:24:01] work: average encoding speed for job is 1458.405151 fps
[18:24:01] mux: track 0, 74962 frames, 374764074 bytes, 999.86 kbps, fifo 4096
[18:24:01] sync: got 74962 frames, 74964 expected
[18:24:01] h264_qsv-decoder done: 74962 frames, 0 decoder errors, 0 drops
[18:24:01] enc_qsv done: frames: 74962 in, 74962 out
[18:24:01] libhb: work result = 0
Encode done!
HandBrake has exited.

If you need this video sample let me know.

ashleylai87 · Post by **ashleylai87** » Sun Aug 25, 2013 4:43 pm

That aside, the nightly 5747 QSV has serious issue with constant quality and average bitrate selection when Intel QSV engine is selected.

gmb, did you notice the log [18:23:10] encqsvInit: RateControlMethod AVBR TargetKbps 1000 ?

Even though Constant Quality is selected, the QSV overides it with 'default' average bitrate of 1000kbps.

gmb · Post by **gmb** » Sun Aug 25, 2013 4:51 pm

I had QP 30 selected. It's basically a speed test and QP is the fastest bitrate mode for Quicksync. If it run in AVBR mode then it's not a surprise that svn5747 is much slower here.

Deleted User 11865 · Post by **Deleted User 11865** » Sun Aug 25, 2013 5:27 pm

ashleylai87 wrote:That aside, the nightly 5747 QSV has serious issue with constant quality and average bitrate selection when Intel QSV engine is selected.

gmb, did you notice the log [18:23:10] encqsvInit: RateControlMethod AVBR TargetKbps 1000 ? Even though Constant Quality is selected, the QSV overides it with 'default' average bitrate of 1000kbps.

See:

s55 wrote:Might be related to an issue in the GUI that wasn't setting the quality flag, so it may be target bitrate.

https://trac.handbrake.fr/changeset/5748

HandBrake

[Fixed] [svn5671]QSV: video fails with Lookahead

[Fixed] [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead

Re: [svn5671]QSV: video fails with Lookahead