this is the source video mediainfo: General Complete name : arsenalVScristalPalas.mp4 Format : MPEG-4 Format profile : JVT Codec ID : avc1 (avc1/mp42) File size : 347 MiB Duration : 11mn 1s Overall bit rate mode : Constant Overall bit rate : 4 407 Kbps Encoded date : UTC 2017-01-03 09:36:38 Tagged date : UTC 2017-01-03 09:36:38
Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L3.2 Format settings, CABAC : Yes Format settings, ReFrames : 2 frames Format settings, GOP : M=3, N=30 Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 11mn 1s Bit rate mode : Constant Bit rate : 4 000 Kbps Width : 1 280 pixels Height : 720 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 50.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.087 Stream size : 315 MiB (91%) Language : English Encoded date : UTC 2017-01-03 09:36:38 Tagged date : UTC 2017-01-03 09:36:38 Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 11mn 1s Source duration : 11mn 1s Bit rate mode : Constant Bit rate : 384 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Frame rate : 46.875 fps (1024 spf) Compression mode : Lossy Stream size : 30.3 MiB (9%) Source stream size : 30.3 MiB (9%) Language : English Encoded date : UTC 2017-01-03 09:36:38 Tagged date : UTC 2017-01-03 09:36:38 and yes, I need to use constant bitrate. do I need to use 2 pass with constant bitrate? _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".