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no-senders; approved; loop; banned-address; header-match-ffmpeg-devel.ffmpeg.org-0; header-match-ffmpeg-devel.ffmpeg.org-1; header-match-ffmpeg-devel.ffmpeg.org-2; header-match-ffmpeg-devel.ffmpeg.org-3; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.10 Precedence: list Reply-To: FFmpeg development discussions and patches Subject: [FFmpeg-devel] [PATCH] avcodec/videotoolboxenc: allow low latency RC with HEVC on Apple Silicon (PR #20453) List-Id: FFmpeg development discussions and patches Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: cgutman via ffmpeg-devel Cc: cgutman Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Archived-At: List-Archive: List-Post: PR #20453 opened by cgutman URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20453 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20453.patch `kVTVideoEncoderSpecification_EnableLowLatencyRateControl` was supported only for H.264 on Intel Macs, but it can be used with both H.264 and HEVC on Apple Silicon. >>From d59660b787c940076a87583597bb8cbf28015d91 Mon Sep 17 00:00:00 2001 From: Cameron Gutman Date: Fri, 5 Sep 2025 23:42:52 -0500 Subject: [PATCH] avcodec/videotoolboxenc: allow low latency RC with HEVC It is supported only for H.264 on Intel Macs, but it can be used with both H.264 and HEVC on Apple Silicon. Signed-off-by: Cameron Gutman --- libavcodec/videotoolboxenc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavcodec/videotoolboxenc.c b/libavcodec/videotoolboxenc.c index e423da6933..f0d3a15897 100644 --- a/libavcodec/videotoolboxenc.c +++ b/libavcodec/videotoolboxenc.c @@ -1709,7 +1709,8 @@ static int vtenc_configure_encoder(AVCodecContext *avctx) #endif // low-latency mode: eliminate frame reordering, follow a one-in-one-out encoding mode - if ((avctx->flags & AV_CODEC_FLAG_LOW_DELAY) && avctx->codec_id == AV_CODEC_ID_H264) { + if ((avctx->flags & AV_CODEC_FLAG_LOW_DELAY) && + ((avctx->codec_id == AV_CODEC_ID_H264) || (TARGET_CPU_ARM64 && avctx->codec_id == AV_CODEC_ID_HEVC))) { CFDictionarySetValue(enc_info, compat_keys.kVTVideoEncoderSpecification_EnableLowLatencyRateControl, kCFBooleanTrue); -- 2.49.1 _______________________________________________ ffmpeg-devel mailing list -- ffmpeg-devel@ffmpeg.org To unsubscribe send an email to ffmpeg-devel-leave@ffmpeg.org