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ffmpeg 轉碼和 HLS

tag-icon • tag-icon ffmpeg streaming hls
ffmpeg 轉碼和 HLS

將輸入串流轉碼為較小的兩個：

ffmpeg -re -v info -i "rtmp://localhost/live/stream live=1" \
-c:v libx264 -b:v 500k -vf scale=540:-1 -preset faster -copyts \
-c:a aac -b:a 64k -ac 2 -flags +global_header \
-f flv "rtmp://localhost/live/500k live=1" \
-c:v libx264 -b:v 800k -vf scale=720:-1 -preset faster -copyts \
-c:a aac -b:a 64k -ac 2 -flags +global_header \
-f flv "rtmp://localhost/live/800k live=1"

然後我需要將它們轉發到 AMS livepkgr HLS 應用程式：

ffmpeg -re -v info \
-i "rtmp://localhost/live/500k live=1" \
-c copy -copyts -flags +global_header \
-f flv "rtmp://localhost/livepkgr/500k?adbe-live-event=liveevent" \
-i "rtmp://localhost/live/800k live=1" \
-c copy -copyts -flags +global_header \
-f flv "rtmp://localhost/livepkgr/800k?adbe-live-event=liveevent"

產生的流未關鍵影格對齊。有機會像 FMLE 編碼器一樣使用 ffmpeg 來實現這一點嗎？感謝您的關注。

答案1

嘗試

ffmpeg -re -v info -i "rtmp://localhost/live/stream live=1" \
-filter_complex "[0:v]split[a][b];[a]scale=540:-1[oa];[b]scale=720:-1[ob]" \
-map [oa] -c:v libx264 -b:v 500k -preset faster -copyts \
-map 0:a -c:a aac -b:a 64k -ac 2 -flags +global_header \
-f flv "rtmp://localhost/live/500k live=1" \
-map [ob] -c:v libx264 -b:v 800k -preset faster -copyts \
-map 0:a -c:a aac -b:a 64k -ac 2 -flags +global_header \
-f flv "rtmp://localhost/live/800k live=1"

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