Re: [FFmpeg-user] HEVC decoding

2020-03-03 Thread Dennis Mungai
On Tue, 3 Mar 2020 at 21:43, Mohammed Bey Ahmed Khernache wrote: > > Hello, > which API or plug-in does ffmpeg use to decode HEVC-coded content? > Is HEVC-Tiles-based parallelism supported by ffmpeg? > > Best regards Hello Ahmed, There's a native (software-based) HEVC decoder in FFmpeg with the

Re: [FFmpeg-user] HEVC decoding

2020-03-03 Thread PaulYurt
FFMPEG is written in C and I believe it doesn’t use plug-ins or APIs to decode HEVC. Paul > On Mar 3, 2020, at 1:43 PM, Mohammed Bey Ahmed Khernache > wrote: > Hello, which API or plug-in does ffmpeg use to decode HEVC-coded content? Is HEVC-Tiles-based parallelism supported by ffmpeg? B

[FFmpeg-user] HEVC decoding

2020-03-03 Thread Mohammed Bey Ahmed Khernache
Hello, which API or plug-in does ffmpeg use to decode HEVC-coded content? Is HEVC-Tiles-based parallelism supported by ffmpeg? Best regards ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscrib

Re: [FFmpeg-user] HEVC decoding of first frame

2015-10-18 Thread Moritz Barsnick
On Fri, Oct 16, 2015 at 12:23:14 +0200, Christian Herglotz wrote: > Hello, > > a) I know that there is some overhead. So I also tested this for > sequences with different resolutions where I could observe the same > behavior: Okay, point taken. There's a new thread on ffmpeg-devel which points

Re: [FFmpeg-user] HEVC decoding of first frame

2015-10-17 Thread Carl Eugen Hoyos
Christian Herglotz fau.de> writes: > Mean decoding times for FFmpegHM > 460*240 1 I-frame: 0.15s0.18s > 460*240 2 I-frames:0.23s0.36s I may absolutely misunderstand what you are trying to show but please understand that afai

Re: [FFmpeg-user] HEVC decoding of first frame

2015-10-17 Thread Christian Herglotz
Hello, a) I know that there is some overhead. So I also tested this for sequences with different resolutions where I could observe the same behavior: Mean decoding times for FFmpegHM 460*240 1 I-frame: 0.15s0.18s 460*240 2 I-frames:0.23

Re: [FFmpeg-user] HEVC decoding of first frame

2015-10-16 Thread Moritz Barsnick
On Thu, Oct 15, 2015 at 08:22:35 +0200, Christian Herglotz wrote: > When timing the process I found that the decoding of the > first frame always takes twice as long as the decoding of all the other > frames. I'm not sure I consider the test you provide as valid. a) Initializing a decoder has (so

Re: [FFmpeg-user] HEVC decoding of first frame

2015-10-15 Thread Christian Herglotz
Hello, thanks for the quick answer! I upgraded my ffmpeg to version 2.8 and still observe the same problem as stated before: When timing the process I found that the decoding of the first frame always takes twice as long as the decoding of all the other frames. Output of stream 1: root@hergl

Re: [FFmpeg-user] HEVC decoding of first frame

2015-09-18 Thread Moritz Barsnick
Hallo Christian, On Thu, Sep 17, 2015 at 10:48:16 +0200, Christian Herglotz wrote: > I've got a question regarding the decoding process for HEVC-coded > sequences. When timing the process I found that the decoding of the > first frame always takes twice as long as the decoding of all the other

[FFmpeg-user] HEVC decoding of first frame

2015-09-17 Thread Christian Herglotz
Hello everyone, I've got a question regarding the decoding process for HEVC-coded sequences. When timing the process I found that the decoding of the first frame always takes twice as long as the decoding of all the other frames. This seems to be true independent from the resolution. It is al