[Libav-user] Long seek times when playing QSV HEVC encoded files

[Wang, Fei W]

Encoded file doesn't contain IDR frame except the 1st frame. You may need check why it leaks IDR frame.

On Mon, 2024-07-01 at 19:06 +0000, Daniel Stankewitz wrote:
No, I only have this issue with the HEVC bitstream.

Thanks,
Daniel

________________________________
Von: Libav-user <libav-user-bounces at ffmpeg.org> im Auftrag von Wang, Fei W <fei.w.wang-at-intel.com at ffmpeg.org>
Gesendet: Montag, 1. Juli 2024 06:49
An: libav-user at ffmpeg.org <libav-user at ffmpeg.org>
Betreff: Re: [Libav-user] Long seek times when playing QSV HEVC encoded files

Does all QSV codecs have this issue? Can you share a encoded bitstream by your app?

Thanks
Fei

On Sun, 2024-06-30 at 10:01 +0000, Daniel Stankewitz wrote:
Hello,

Since I have switched my app from libav* / FFmpeg 6 to 7 I have noticed some issues with the Intel QSV HEVC encoder (NVENC works fine).

When I exported a video with a length of min. 6 minutes and I play it with i.e. MPC-HC I experience a long seek time when jumping through the video. The later the point I seek to, the longer it takes. Just like it has to crawl through the whole file until it finds the right frame.
This didn't happen with libav* from  FFmpeg 6. It also doesn't happen when using the FFmpeg 6 or 7 CLI, only when I encode a file using libav*. Does anybody have any idea what this could be?

Thanks,
Daniel
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