Comment # 5
on bug 98005
from Andy Furniss
I normally test with raw, but this sample also shows the issue with transcode, I tried harder and it is possible since the patch to get a normal size vbr - just a lot harder than before. 1080p50.mkv - https://drive.google.com/file/d/0BxP5-S1t9VEEczlMd2ZzUElldms/view?usp=sharing Here's a paste testing with your settings. andy [vce-vbr-test]$ gst-launch-1.0 -f filesrc location=1080p50.mkv ! matroskademux ! vaapidecode ! vaapih264enc rate-control=vbr bitrate=21428 ! video/x-h264,profile="" ! filesink location=vbr.264 Setting pipeline to PAUSED ... libva info: VA-API version 0.39.2 libva info: va_getDriverName() returns 0 libva info: User requested driver 'radeonsi' libva info: Trying to open /usr/lib/dri/radeonsi_drv_video.so libva info: Found init function __vaDriverInit_0_39 libva info: va_openDriver() returns 0 Pipeline is PREROLLING ... Got context from element 'vaapiencodeh264-0': gst.vaapi.Display=context, gst.vaapi.Display=(GstVaapiDisplay)NULL; Redistribute latency... Pipeline is PREROLLED ... Setting pipeline to PLAYING ... New clock: GstSystemClock Got EOS from element "pipeline0". Execution ended after 0:00:05.440943972 Setting pipeline to PAUSED ... Setting pipeline to READY ... Setting pipeline to NULL ... Freeing pipeline ... andy [vce-vbr-test]$ gst-launch-1.0 -f filesrc location=1080p50.mkv ! matroskademux ! vaapidecode ! vaapih264enc rate-control=cbr bitrate=15000 ! video/x-h264,profile="" ! filesink location=cbr.264 Setting pipeline to PAUSED ... libva info: VA-API version 0.39.2 libva info: va_getDriverName() returns 0 libva info: User requested driver 'radeonsi' libva info: Trying to open /usr/lib/dri/radeonsi_drv_video.so libva info: Found init function __vaDriverInit_0_39 libva info: va_openDriver() returns 0 Pipeline is PREROLLING ... Got context from element 'vaapiencodeh264-0': gst.vaapi.Display=context, gst.vaapi.Display=(GstVaapiDisplay)NULL; Redistribute latency... Pipeline is PREROLLED ... Setting pipeline to PLAYING ... New clock: GstSystemClock Got EOS from element "pipeline0". Execution ended after 0:00:05.162493127 Setting pipeline to PAUSED ... Setting pipeline to READY ... Setting pipeline to NULL ... Freeing pipeline ... andy [vce-vbr-test]$ ls -lh total 85M -rw-rw-r-- 1 andy andy 35M Sep 28 16:05 1080p50.mkv -rw-rw-r-- 1 andy andy 35M Oct 18 21:17 cbr.264 -rw-rw-r-- 1 andy andy 15M Oct 18 21:16 vbr.264
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