Re: [FFmpeg-user] Stream specifier ':a' in filtergraph Error
Am 10.11.2020 um 22:27 schrieb Randy Johnson via ffmpeg-user: Hello, When running the following command: ``` ffmpeg \ -loop 1 -framerate 30 -t 1.4 -i /assets/img/filler640480.jpg -i 0d.mp4 - y \ -loop 1 -framerate 30 -t 891.113 -i /assets/img/filler640480.jpg -i 9f.mp4 -y \ -f lavfi -t 0.1 -i anullsrc=channel_layout=mono:sample_rate=48000 \ -filter_complex " [0:v]setsar=1[v0];[2:v]setsar=1[v1];[v0][4:a][1:v][1:a][v1][4:a][3:v][3:a]concat=n=4:v=1:a=1" -vsync 2 -vcodec libx264 -pix_fmt yuv420p 0245-grid.mp4 ``` I am getting the following error: ``` Stream specifier ':a' in filtergraph description [0:v]setsar=1[v0];[2:v]setsar=1[v1];[v0][4:a][1:v][1:a][v1][4:a][3:v][3:a]concat=n=4:v=1:a=1 matches no streams. ``` This only happens on some video processing not all, cannot seem to figure out why. You could check those videos with FFprobe. May be they have no audio stream, or something else is different. Michael ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] Stream specifier ':a' in filtergraph Error
Hello, When running the following command: ``` ffmpeg \ -loop 1 -framerate 30 -t 1.4 -i /assets/img/filler640480.jpg -i 0d.mp4 - y \ -loop 1 -framerate 30 -t 891.113 -i /assets/img/filler640480.jpg -i 9f.mp4 -y \ -f lavfi -t 0.1 -i anullsrc=channel_layout=mono:sample_rate=48000 \ -filter_complex " [0:v]setsar=1[v0];[2:v]setsar=1[v1];[v0][4:a][1:v][1:a][v1][4:a][3:v][3:a]concat=n=4:v=1:a=1" -vsync 2 -vcodec libx264 -pix_fmt yuv420p 0245-grid.mp4 ``` I am getting the following error: ``` Stream specifier ':a' in filtergraph description [0:v]setsar=1[v0];[2:v]setsar=1[v1];[v0][4:a][1:v][1:a][v1][4:a][3:v][3:a]concat=n=4:v=1:a=1 matches no streams. ``` This only happens on some video processing not all, cannot seem to figure out why. Thank You, Randy ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] (no subject)
Hello, When running the following command: ``` ffmpeg \ -loop 1 -framerate 30 -t 1.4 -i /assets/img/filler640480.jpg -i 0d.mp4 - y \ -loop 1 -framerate 30 -t 891.113 -i /assets/img/filler640480.jpg -i 9f.mp4 -y \ -f lavfi -t 0.1 -i anullsrc=channel_layout=mono:sample_rate=48000 \ -filter_complex " [0:v]setsar=1[v0];[2:v]setsar=1[v1];[v0][4:a][1:v][1:a][v1][4:a][3:v][3:a]concat=n=4:v=1:a=1" -vsync 2 -vcodec libx264 -pix_fmt yuv420p 0245-grid.mp4 ``` I am getting the following error: ``` Stream specifier ':a' in filtergraph description [0:v]setsar=1[v0];[2:v]setsar=1[v1];[v0][4:a][1:v][1:a][v1][4:a][3:v][3:a]concat=n=4:v=1:a=1 matches no streams. ``` This only happens on some video processing not all, cannot seem to figure out why. Thank You, Randy ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] what happened to p7 & other nvenc presets in ffmeg ?
hi all, could plz someone wise me up, in some google searches p7 preset showed up in ffmpeg some time ago (at the same time with slow, so, today's ffmpeg "slow" may and may not by a rename of p7), nvidia still publish p7 preset results for cuda 11.* sdk, there's NvenC on git (chinise encoder based on sdk, not ffmpg related), it also does have p7 (with cuda11). so, what is it about, is p7 available somehow in 4.3.* + cuda 11* or not, was it renamed, merged etc ? i'm trying to get the max IQ possible from cuda (on a given card) ? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
